System.Security.Cryptography.Xml
Provides classes to support the creation and validation of XML digital signatures. The classes in this namespace implement the World Wide Web Consortium Recommendation, "XML-Signature Syntax and Processing", described at http://www.w3.org/TR/xmldsig-core/. Commonly Used Types: System.Security.Cryptography.Xml.CipherData System.Security.Cryptography.Xml.CipherReference System.Security.Cryptography.Xml.DataObject System.Security.Cryptography.Xml.DataReference System.Security.Cryptography.Xml.DSAKeyValue System.Security.Cryptography.Xml.EncryptedData System.Security.Cryptography.Xml.EncryptedKey System.Security.Cryptography.Xml.EncryptedReference System.Security.Cryptography.Xml.EncryptedType System.Security.Cryptography.Xml.EncryptedXml System.Security.Cryptography.Xml.EncryptionMethod System.Security.Cryptography.Xml.EncryptionProperty System.Security.Cryptography.Xml.EncryptionPropertyCollection System.Security.Cryptography.Xml.KeyInfo System.Security.Cryptography.Xml.KeyInfoClause System.Security.Cryptography.Xml.KeyInfoEncryptedKey System.Security.Cryptography.Xml.KeyInfoName System.Security.Cryptography.Xml.KeyInfoNode System.Security.Cryptography.Xml.KeyInfoRetrievalMethod System.Security.Cryptography.Xml.KeyInfoX509Data System.Security.Cryptography.Xml.KeyReference System.Security.Cryptography.Xml.Reference System.Security.Cryptography.Xml.ReferenceList System.Security.Cryptography.Xml.RSAKeyValue System.Security.Cryptography.Xml.Signature System.Security.Cryptography.Xml.SignedInfo System.Security.Cryptography.Xml.SignedXml System.Security.Cryptography.Xml.Transform System.Security.Cryptography.Xml.TransformChain System.Security.Cryptography.Xml.XmlDecryptionTransform System.Security.Cryptography.Xml.XmlDsigBase64Transform System.Security.Cryptography.Xml.XmlDsigC14NTransform System.Security.Cryptography.Xml.XmlDsigC14NWithCommentsTransform System.Security.Cryptography.Xml.XmlDsigEnvelopedSignatureTransform System.Security.Cryptography.Xml.XmlDsigExcC14NTransform System.Security.Cryptography.Xml.XmlDsigExcC14NWithCommentsTransform System.Security.Cryptography.Xml.XmlDsigXPathTransform System.Security.Cryptography.Xml.XmlDsigXsltTransform System.Security.Cryptography.Xml.XmlLicenseTransform
Activity
- Latest release
- 6d ago
- Total releases
- 136
- Cadence
- ~2 days
- Last 12 months
- 35
Details
- License
- MIT
- First release
- May 09, 2017
| Version | Released | |
|---|---|---|
9.0.20
patch
|
9.0.20
patch
Dependencies (4)
|
|
10.0.12
patch
|
10.0.12
patch
Dependencies (4)
|
|
11.0.0-rc.1.26425.128
pre
|
11.0.0-rc.1.26425.128
pre
Dependencies (4)
|
|
10.0.11
patch
|
10.0.11
patch
Dependencies (4)
|
|
9.0.19
patch
|
9.0.19
patch
Dependencies (4)
|
|
11.0.0-preview.7.26381.103
pre
|
11.0.0-preview.7.26381.103
pre
Dependencies (4)
|
|
10.0.10
patch
|
10.0.10
patch
Dependencies (4)
|
|
9.0.18
patch
|
9.0.18
patch
Dependencies (4)
|
|
8.0.4
patch
|
8.0.4
patch
Dependencies (3)
|
|
11.0.0-preview.6.26359.118
pre
|
11.0.0-preview.6.26359.118
pre
Dependencies (4)
|
|
10.0.9
patch
5 CVEs
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev |
10.0.9
patch
Dependencies (4)
|
|
9.0.17
patch
5 CVEs
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev |
9.0.17
patch
Dependencies (4)
|
|
11.0.0-preview.5.26302.115
pre
|
11.0.0-preview.5.26302.115
pre
Dependencies (4)
|
|
10.0.8
patch
5 CVEs
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev |
10.0.8
patch
Dependencies (4)
|
|
9.0.16
patch
5 CVEs
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev |
9.0.16
patch
Dependencies (4)
|
|
11.0.0-preview.4.26230.115
pre
|
11.0.0-preview.4.26230.115
pre
Dependencies (4)
|
|
10.0.7
patch
5 CVEs
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev |
10.0.7
patch
Dependencies (4)
|
|
9.0.15
patch
5 CVEs
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev |
9.0.15
patch
Dependencies (4)
|
|
8.0.3
patch
5 CVEs
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev |
8.0.3
patch
Dependencies (3)
|
|
10.0.6
patch
5 CVEs
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev |
10.0.6
patch
Dependencies (4)
|
|
11.0.0-preview.3.26207.106
pre
|
11.0.0-preview.3.26207.106
pre
Dependencies (4)
|
|
10.0.5
patch
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
10.0.5
patch
Dependencies (4)
|
|
11.0.0-preview.2.26159.112
pre
|
11.0.0-preview.2.26159.112
pre
Dependencies (4)
|
|
9.0.14
patch
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
9.0.14
patch
Dependencies (4)
|
|
10.0.4
patch
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
10.0.4
patch
Dependencies (4)
|
|
11.0.0-preview.1.26104.118
pre
|
11.0.0-preview.1.26104.118
pre
Dependencies (4)
|
|
9.0.13
patch
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
9.0.13
patch
Dependencies (4)
|
|
10.0.3
patch
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
10.0.3
patch
Dependencies (4)
|
|
10.0.2
patch
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
10.0.2
patch
Dependencies (4)
|
|
9.0.12
patch
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
9.0.12
patch
Dependencies (4)
|
|
10.0.1
patch
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
10.0.1
patch
Dependencies (4)
|
|
10.0.0
major
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
10.0.0
major
Dependencies (4)
|
|
9.0.11
patch
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
9.0.11
patch
Dependencies (4)
|
|
10.0.0-rc.2.25502.107
pre
|
10.0.0-rc.2.25502.107
pre
Dependencies (4)
|
|
9.0.10
patch
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
9.0.10
patch
Dependencies (4)
|
|
9.0.9
patch
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
9.0.9
patch
Dependencies (4)
|
|
10.0.0-rc.1.25451.107
pre
|
10.0.0-rc.1.25451.107
pre
Dependencies (4)
|
|
10.0.0-preview.7.25380.108
pre
|
10.0.0-preview.7.25380.108
pre
Dependencies (4)
|
|
9.0.8
patch
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
9.0.8
patch
Dependencies (4)
|
|
10.0.0-preview.6.25358.103
pre
|
10.0.0-preview.6.25358.103
pre
Dependencies (4)
|
|
9.0.7
patch
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
9.0.7
patch
Dependencies (4)
|
|
9.0.6
patch
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
9.0.6
patch
Dependencies (4)
|
|
10.0.0-preview.5.25277.114
pre
|
10.0.0-preview.5.25277.114
pre
Dependencies (4)
|
|
9.0.5
patch
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
9.0.5
patch
Dependencies (4)
|
|
10.0.0-preview.4.25258.110
pre
|
10.0.0-preview.4.25258.110
pre
Dependencies (4)
|
|
10.0.0-preview.3.25171.5
pre
|
10.0.0-preview.3.25171.5
pre
Dependencies (4)
|
|
9.0.4
patch
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
9.0.4
patch
Dependencies (4)
|
|
10.0.0-preview.2.25163.2
pre
|
10.0.0-preview.2.25163.2
pre
Dependencies (4)
|
|
9.0.3
patch
8 CVEs
CVE-2026-32203
GHSA-6588-8gv4-xfgh
BIT-dotnet-2026-32203
BIT-dotnet-sdk-2026-32203
Jul 28, 2026
Microsoft Security Advisory CVE-2026-32203 – .NET and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where a buffer overflow can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/391 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References
Updated Aug 12, 2026 · Source: OSV.dev
CVE-2026-50527
GHSA-mmjf-rqrv-855v
BIT-dotnet-2026-50527
BIT-dotnet-sdk-2026-50527
Jul 21, 2026
Microsoft Security Advisory CVE-2026-50527 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that is improperly validated, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50525
GHSA-8q5v-6pqq-x66h
BIT-dotnet-2026-50525
BIT-dotnet-sdk-2026-50525
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50525 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/414 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-50648
GHSA-23rf-6693-g89p
BIT-dotnet-2026-50648
BIT-dotnet-sdk-2026-50648
Jul 20, 2026
Microsoft Security Advisory CVE-2026-50648 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability by supplying crafted encrypted XML that causes uncontrolled resource consumption, resulting in denial of service. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/416 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgements41ae55e9310ff27fa6f26af4727e5590 RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47304
GHSA-g8r8-53c2-pm3f
BIT-dotnet-2026-47304
BIT-dotnet-sdk-2026-47304
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47304 – .NET Security Feature Bypass Vulnerability
8.1
/ 10
High
Network
High
None
None
Unchanged
High
High
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML Encryption (System.Security.Cryptography.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A security feature bypass vulnerability exists in the XML encryption implementation (EncryptedXml) in .NET 8, .NET 9, and .NET 10. An attacker could exploit this vulnerability to bypass encryption protections and access encrypted data. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/412. CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-47302
GHSA-cvvh-rhrc-wg4q
BIT-dotnet-2026-47302
BIT-dotnet-sdk-2026-47302
Jul 20, 2026
Microsoft Security Advisory CVE-2026-47302 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive summaryMicrosoft is releasing this security advisory to provide information about a vulnerability in .NET XML processing (System.Security.Cryptography.Xml, System.Xml). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 8, .NET 9, and .NET 10 related to XML processing. An attacker can exploit XML encryption handling in XML parsing to cause excessive resource consumption or application crash. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/410 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below .NET 10.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.9 | 10.0.10 Microsoft.NetCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.9 | 10.0.10 .NET 9.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.17 | 9.0.18 Microsoft.NetCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.17 | 9.0.18 .NET 8.0Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.3 | 8.0.4 Microsoft.NetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.28 | 8.0.29 Microsoft.NetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.28 | 8.0.29 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLevi Broderick with Microsoft RevisionsV1.0 (July 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.0.6
10.0.7
10.0.8
10.0.9
9.0.0
9.0.1
+ 20 more Show less
9.0.10
9.0.11
9.0.12
9.0.13
9.0.14
9.0.15
9.0.16
9.0.17
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
8.0.3
Fixed in
8.0.4
9.0.18
10.0.10
References
Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-26171
GHSA-w3x6-4m5h-cxqf
BIT-dotnet-2026-26171
BIT-dotnet-sdk-2026-26171
BIT-powershell-2026-26171
Apr 14, 2026
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where uncontrolled resource consumption can give an attacker to the ability to perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/389 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=10.0.0, <=10.0.5; | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=9.0.0, <=9.0.14; | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.xml | >=8.0.0, <=8.0.2; | 8.0.3 Advisory FAQHow do I know if I am affected?If using an affected package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.Xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev
CVE-2026-33116
GHSA-37gx-xxp4-5rgx
BIT-dotnet-2026-33116
BIT-dotnet-sdk-2026-33116
Apr 14, 2026
Microsoft Security Advisory CVE-2026-33116 – .NET, .NET Framework, and Visual Studio Denial of Service Vulnerability
7.5
/ 10
High
Network
Low
None
None
Unchanged
None
None
High
Executive Summary:Microsoft is releasing this security advisory to provide information about a vulnerability in System.Security.Cryptography.Xml. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in EncryptedXml class where an attacker can cause an infinite loop and perform a Denial of Service attack. AnnouncementAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/392 CVSS Details
Affected Platforms
Affected PackagesThe vulnerability affects any Microsoft .NET project if it uses any of affected packages versions listed below .NET 10Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=10.0.0, <=10.0.5 | 10.0.6 .NET 9Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=9.0.0, <=9.0.14 | 9.0.15 .NET 8Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- System.Security.Cryptography.Xml | >=8.0.0, <=8.0.2 | 8.0.3 Advisory FAQHow do I know if I am affected?If using a package listed in affected packages, you're exposed to the vulnerability. How do I fix the issue?To update the Using the System.Security.Cryptography.xml NuGet package, use one of the following methods: NuGet Package Manager UI in Visual Studio:
Using the NuGet Package Manager Console in Visual Studio:
Using the .NET CLI (Command Line Interface):
Once you have updated the nuget package reference you must recompile and deploy your application. Additionally we recommend you update your runtime and/or SDKs, but it is not necessary to patch the vulnerability. Other InformationReporting Security IssuesIf you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the MSRC Researcher Portal. Further information can be found in the MSRC Report an Issue FAQ. Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. SupportYou can ask questions about this issue on GitHub in the .NET GitHub organization. The main repos are located at https://github.com/dotnet/runtime. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. DisclaimerThe information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. External LinksAcknowledgementsLudvig Pedersen RevisionsV1.0 (April 14, 2026): Advisory published. Affected versions
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
9.0.0
9.0.1
9.0.10
9.0.11
9.0.12
9.0.13
+ 12 more Show less
9.0.14
9.0.2
9.0.3
9.0.4
9.0.5
9.0.6
9.0.7
9.0.8
9.0.9
8.0.0
8.0.1
8.0.2
Fixed in
8.0.3
9.0.15
10.0.6
References Updated Sep 10, 2026 · Source: OSV.dev |
9.0.3
patch
Dependencies (4)
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10.0.0-preview.1.25080.5
pre
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10.0.0-preview.1.25080.5
pre
Dependencies (4)
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