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CVE-2026-96222

Active Directory Federation Services (AD FS) Spoofing Vulnerability

7.4 HighFix available

Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
None

Exploit likelihood

0.59%Unchanged since Oct 14, 2026
90%50%10%1%

What each source reports

CVE List Score used 7.4

Active Directory Federation Services (AD FS) Spoofing Vulnerability

Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

Record
CVE-2026-96222
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C
Weakness
CWE-295
Updated
2026-11-02
EUVDEUVD-2026-99750 7.4

Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

Record
EUVD-2026-99750
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C
Updated
2026-11-02
GitHub AdvisoriesGHSA-vrv5-2jg9-4mmr 7.4

Microsoft Security Advisory CVE-2026-96222 - .NET Spoofing Vulnerability

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.

KeyInfoX509Data can accept serialized certificate formats containing attacker-controlled chain metadata instead of requiring a plain X.509 certificate, contributing to certificate-forgery and token-spoofing paths.

Announcement

Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/474

CVSS Details

  • Version: 3.1
  • Severity: High
  • Score: 7.4
  • Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
  • Weakness: CWE-295 (Improper Certificate Validation)

Affected Platforms

  • Platforms: Windows, Linux, macOS
  • Architectures: All

<a name="affected-packages"></a>Affected Packages

The vulnerability affects Microsoft .NET projects that use an affected package version listed below.

Package name | Affected version | Patched version ------------ | ---------------- | --------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.4 | 8.0.5

Advisory FAQ

<a name="how-affected"></a>How do I know if I am affected?

If using a package listed in affected packages, you're exposed to the vulnerability.

<a name="how-fix"></a>How do I fix the issue?

  1. To fix the issue please install the latest version of .NET. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs.
  2. If your application references the vulnerable package, update the package reference to the patched version. You can list the versions you have installed by running the dotnet --info command.

Once you have installed the updated runtime or SDK, restart your apps for the update to take effect.

Additionally, if you've deployed self-contained applications targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.

Other Information

Reporting Security Issues

If 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.

Support

You 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.

Disclaimer

The 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 Links

…

Record
GHSA-vrv5-2jg9-4mmr
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-295
Updated
2026-11-02
NVD 7.4

Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

Record
CVE-2026-96222
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-295
Updated
2026-11-02
OSVALPINE-CVE-2026-96222 7.4

Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

Record
ALPINE-CVE-2026-96222
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated
2026-11-03
OSVGHSA-vrv5-2jg9-4mmr 7.4

Microsoft Security Advisory CVE-2026-96222 - .NET Spoofing Vulnerability

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.

KeyInfoX509Data can accept serialized certificate formats containing attacker-controlled chain metadata instead of requiring a plain X.509 certificate, contributing to certificate-forgery and token-spoofing paths.

Announcement

Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/474

CVSS Details

  • Version: 3.1
  • Severity: High
  • Score: 7.4
  • Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
  • Weakness: CWE-295 (Improper Certificate Validation)

Affected Platforms

  • Platforms: Windows, Linux, macOS
  • Architectures: All

<a name="affected-packages"></a>Affected Packages

The vulnerability affects Microsoft .NET projects that use an affected package version listed below.

Package name | Affected version | Patched version ------------ | ---------------- | --------------- System.Security.Cryptography.Xml | >= 8.0.0, <= 8.0.4 | 8.0.5

Advisory FAQ

<a name="how-affected"></a>How do I know if I am affected?

If using a package listed in affected packages, you're exposed to the vulnerability.

<a name="how-fix"></a>How do I fix the issue?

  1. To fix the issue please install the latest version of .NET. If you have installed one or more .NET SDKs through Visual Studio, Visual Studio will prompt you to update Visual Studio, which will also update your .NET SDKs.
  2. If your application references the vulnerable package, update the package reference to the patched version. You can list the versions you have installed by running the dotnet --info command.

Once you have installed the updated runtime or SDK, restart your apps for the update to take effect.

Additionally, if you've deployed self-contained applications targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.

Other Information

Reporting Security Issues

If 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.

Support

You 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.

Disclaimer

The 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 Links

…

Record
GHSA-vrv5-2jg9-4mmr
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-295
Updated
2026-11-02
Show 12 moreShow less
OSVRHSA-2026:84693 8.8

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Record
RHSA-2026:84693
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRLSA-2026:86168 9.4

Critical: .NET 8.0 security, bug fix, and enhancement update

.NET is a fast, lightweight and modular platform for creating cross platform applications that work on Linux, macOS and Windows. It particularly focuses on creating console applications, web applications and micro-services. .NET contains a runtime conforming to .NET Standards a set of framework libraries, an SDK containing compilers and a 'dotnet' application to drive everything.

SDK version: 8.0.132 Runtime version: 8.0.32

Security Fix(es):

  • dotnet10.0: dotnet9.0: dotnet: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-58280)

  • dotnet10.0: dotnet8.0: dotnet9.0: dotnet: .NET Information Disclosure Vulnerability (CVE-2026-66822)

  • dotnet9.0: dotnet: dotnet10.0: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-69651)

  • dotnet8.0: dotnet10.0: dotnet: dotnet9.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70159)

  • dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70175)

  • dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70179)

  • dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70181)

  • dotnet: dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70183)

  • dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70186)

  • dotnet: ASP.NET Core Security Feature Bypass Vulnerability (CVE-2026-70188)

  • dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70196)

  • dotnet: ASP.NET Core Tampering Vulnerability (CVE-2026-88092)

  • dotnet10.0: dotnet8.0: dotnet9.0: dotnet: MessagePack: Nested arrays can blow past buffer length limits (CVE-2026-92707)

  • dotnet8.0: Active Directory Federation Services (AD FS) Spoofing Vulnerability (CVE-2026-96222)

  • dotnet: dotnet8.0: dotnet9.0: dotnet10.0: .NET Elevation of Privilege Vulnerability (CVE-2026-96225)

  • dotnet9.0: dotnet10.0: dotnet8.0: dotnet: ASP.NET Core Remote Code Execution Vulnerability (CVE-2026-96230)

  • dotnet: dotnet9.0: dotnet10.0: dotnet8.0: .NET Elevation of Privilege Vulnerability (CVE-2026-96231)

  • dotnet10.0: dotnet: dotnet8.0: dotnet9.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-96233)

  • dotnet: dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-96236)

  • dotnet8.0: dotnet10.0: dotnet9.0: .NET Remote Code Execution Vulnerability (CVE-2026-96237)

  • dotnet8.0: dotnet10.0: dotnet9.0: dotnet: .NET Security Feature Bypass Vulnerability (CVE-2026-96238)

Bug Fix(es) and Enhancement(s):

  • Update .NET 8.0 to SDK 8.0.132 and Runtime 8.0.32 [rhel-10.2.z] (JIRA:Rocky Linux-277794)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
RLSA-2026:86168
CVSS 3.1
9.4 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Updated
2026-11-02
OSVRLSA-2026:86169 9.4

Critical: .NET 8.0 security, bug fix, and enhancement update

.NET is a fast, lightweight and modular platform for creating cross platform applications that work on Linux, macOS and Windows. It particularly focuses on creating console applications, web applications and micro-services. .NET contains a runtime conforming to .NET Standards a set of framework libraries, an SDK containing compilers and a 'dotnet' application to drive everything.

SDK version: 8.0.132 Runtime version: 8.0.32

Security Fix(es):

  • dotnet10.0: dotnet9.0: dotnet: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-58280)

  • dotnet10.0: dotnet8.0: dotnet9.0: dotnet: .NET Information Disclosure Vulnerability (CVE-2026-66822)

  • dotnet9.0: dotnet: dotnet10.0: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-69651)

  • dotnet8.0: dotnet10.0: dotnet: dotnet9.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70159)

  • dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70175)

  • dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70179)

  • dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70181)

  • dotnet: dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70183)

  • dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70186)

  • dotnet: ASP.NET Core Security Feature Bypass Vulnerability (CVE-2026-70188)

  • dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70196)

  • dotnet: ASP.NET Core Tampering Vulnerability (CVE-2026-88092)

  • dotnet10.0: dotnet8.0: dotnet9.0: dotnet: MessagePack: Nested arrays can blow past buffer length limits (CVE-2026-92707)

  • dotnet8.0: Active Directory Federation Services (AD FS) Spoofing Vulnerability (CVE-2026-96222)

  • dotnet: dotnet8.0: dotnet9.0: dotnet10.0: .NET Elevation of Privilege Vulnerability (CVE-2026-96225)

  • dotnet9.0: dotnet10.0: dotnet8.0: dotnet: ASP.NET Core Remote Code Execution Vulnerability (CVE-2026-96230)

  • dotnet: dotnet9.0: dotnet10.0: dotnet8.0: .NET Elevation of Privilege Vulnerability (CVE-2026-96231)

  • dotnet10.0: dotnet: dotnet8.0: dotnet9.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-96233)

  • dotnet: dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-96236)

  • dotnet8.0: dotnet10.0: dotnet9.0: .NET Remote Code Execution Vulnerability (CVE-2026-96237)

  • dotnet8.0: dotnet10.0: dotnet9.0: dotnet: .NET Security Feature Bypass Vulnerability (CVE-2026-96238)

Bug Fix(es) and Enhancement(s):

  • Update .NET 8.0 to SDK 8.0.132 and Runtime 8.0.32 [rhel-9.8.z] (JIRA:Rocky Linux-277793)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
RLSA-2026:86169
CVSS 3.1
9.4 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Updated
2026-11-02
OSVRLSA-2026:86594 9.4

Critical: .NET 8.0 security, bug fix, and enhancement update

.NET is a fast, lightweight and modular platform for creating cross platform applications that work on Linux, macOS and Windows. It particularly focuses on creating console applications, web applications and micro-services. .NET contains a runtime conforming to .NET Standards a set of framework libraries, an SDK containing compilers and a 'dotnet' application to drive everything.

SDK version: 8.0.132 Runtime version: 8.0.32

Security Fix(es):

  • dotnet10.0: dotnet9.0: dotnet: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-58280)

  • dotnet10.0: dotnet8.0: dotnet9.0: dotnet: .NET Information Disclosure Vulnerability (CVE-2026-66822)

  • dotnet9.0: dotnet: dotnet10.0: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-69651)

  • dotnet8.0: dotnet10.0: dotnet: dotnet9.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70159)

  • dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70175)

  • dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70179)

  • dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70181)

  • dotnet: dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70183)

  • dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70186)

  • dotnet: ASP.NET Core Security Feature Bypass Vulnerability (CVE-2026-70188)

  • dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70196)

  • dotnet: ASP.NET Core Tampering Vulnerability (CVE-2026-88092)

  • dotnet10.0: dotnet8.0: dotnet9.0: dotnet: MessagePack: Nested arrays can blow past buffer length limits (CVE-2026-92707)

  • dotnet8.0: Active Directory Federation Services (AD FS) Spoofing Vulnerability (CVE-2026-96222)

  • dotnet: dotnet8.0: dotnet9.0: dotnet10.0: .NET Elevation of Privilege Vulnerability (CVE-2026-96225)

  • dotnet9.0: dotnet10.0: dotnet8.0: dotnet: ASP.NET Core Remote Code Execution Vulnerability (CVE-2026-96230)

  • dotnet: dotnet9.0: dotnet10.0: dotnet8.0: .NET Elevation of Privilege Vulnerability (CVE-2026-96231)

  • dotnet10.0: dotnet: dotnet8.0: dotnet9.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-96233)

  • dotnet: dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-96236)

  • dotnet8.0: dotnet10.0: dotnet9.0: .NET Remote Code Execution Vulnerability (CVE-2026-96237)

  • dotnet8.0: dotnet10.0: dotnet9.0: dotnet: .NET Security Feature Bypass Vulnerability (CVE-2026-96238)

Bug Fix(es) and Enhancement(s):

  • Update .NET 8.0 to SDK 8.0.132 and Runtime 8.0.32 (JIRA:Rocky Linux-277790)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
RLSA-2026:86594
CVSS 3.1
9.4 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Updated
2026-11-02
OSVUBUNTU-CVE-2026-96222 7.4

Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

Record
UBUNTU-CVE-2026-96222
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated
2026-11-02
OSVALSA-2026:86168 No score

Critical: .NET 8.0 security, bug fix, and enhancement update

.NET is a fast, lightweight and modular platform for creating cross platform applications that work on Linux, macOS and Windows. It particularly focuses on creating console applications, web applications and micro-services. .NET contains a runtime conforming to .NET Standards a set of framework libraries, an SDK containing compilers and a 'dotnet' application to drive everything.

SDK version: 8.0.132
Runtime version: 8.0.32

Security Fix(es):

  • dotnet10.0: dotnet9.0: dotnet: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-58280)
  • dotnet10.0: dotnet8.0: dotnet9.0: dotnet: .NET Information Disclosure Vulnerability (CVE-2026-66822)
  • dotnet9.0: dotnet: dotnet10.0: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-69651)
  • dotnet8.0: dotnet10.0: dotnet: dotnet9.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70159)
  • dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70175)
  • dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70179)
  • dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70181)
  • dotnet: dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70183)
  • dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70186)
  • dotnet: ASP.NET Core Security Feature Bypass Vulnerability (CVE-2026-70188)
  • dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70196)
  • dotnet: ASP.NET Core Tampering Vulnerability (CVE-2026-88092)
  • dotnet10.0: dotnet8.0: dotnet9.0: dotnet: MessagePack: Nested arrays can blow past buffer length limits (CVE-2026-92707)
  • dotnet8.0: Active Directory Federation Services (AD FS) Spoofing Vulnerability (CVE-2026-96222)
  • dotnet: dotnet8.0: dotnet9.0: dotnet10.0: .NET Elevation of Privilege Vulnerability (CVE-2026-96225)
  • dotnet9.0: dotnet10.0: dotnet8.0: dotnet: ASP.NET Core Remote Code Execution Vulnerability (CVE-2026-96230)
  • dotnet: dotnet9.0: dotnet10.0: dotnet8.0: .NET Elevation of Privilege Vulnerability (CVE-2026-96231)
  • dotnet10.0: dotnet: dotnet8.0: dotnet9.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-96233)
  • dotnet: dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-96236)
  • dotnet8.0: dotnet10.0: dotnet9.0: .NET Remote Code Execution Vulnerability (CVE-2026-96237)
  • dotnet8.0: dotnet10.0: dotnet9.0: dotnet: .NET Security Feature Bypass Vulnerability (CVE-2026-96238)

Bug Fix(es) and Enhancement(s):

  • Update .NET 8.0 to SDK 8.0.132 and Runtime 8.0.32 [almalinux-10.2.z] (JIRA:AlmaLinux-277794)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
ALSA-2026:86168
Updated
2026-11-02
OSVALSA-2026:86169 No score

Critical: .NET 8.0 security, bug fix, and enhancement update

.NET is a fast, lightweight and modular platform for creating cross platform applications that work on Linux, macOS and Windows. It particularly focuses on creating console applications, web applications and micro-services. .NET contains a runtime conforming to .NET Standards a set of framework libraries, an SDK containing compilers and a 'dotnet' application to drive everything.

SDK version: 8.0.132
Runtime version: 8.0.32

Security Fix(es):

  • dotnet10.0: dotnet9.0: dotnet: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-58280)
  • dotnet10.0: dotnet8.0: dotnet9.0: dotnet: .NET Information Disclosure Vulnerability (CVE-2026-66822)
  • dotnet9.0: dotnet: dotnet10.0: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-69651)
  • dotnet8.0: dotnet10.0: dotnet: dotnet9.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70159)
  • dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70175)
  • dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70179)
  • dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70181)
  • dotnet: dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70183)
  • dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70186)
  • dotnet: ASP.NET Core Security Feature Bypass Vulnerability (CVE-2026-70188)
  • dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70196)
  • dotnet: ASP.NET Core Tampering Vulnerability (CVE-2026-88092)
  • dotnet10.0: dotnet8.0: dotnet9.0: dotnet: MessagePack: Nested arrays can blow past buffer length limits (CVE-2026-92707)
  • dotnet8.0: Active Directory Federation Services (AD FS) Spoofing Vulnerability (CVE-2026-96222)
  • dotnet: dotnet8.0: dotnet9.0: dotnet10.0: .NET Elevation of Privilege Vulnerability (CVE-2026-96225)
  • dotnet9.0: dotnet10.0: dotnet8.0: dotnet: ASP.NET Core Remote Code Execution Vulnerability (CVE-2026-96230)
  • dotnet: dotnet9.0: dotnet10.0: dotnet8.0: .NET Elevation of Privilege Vulnerability (CVE-2026-96231)
  • dotnet10.0: dotnet: dotnet8.0: dotnet9.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-96233)
  • dotnet: dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-96236)
  • dotnet8.0: dotnet10.0: dotnet9.0: .NET Remote Code Execution Vulnerability (CVE-2026-96237)
  • dotnet8.0: dotnet10.0: dotnet9.0: dotnet: .NET Security Feature Bypass Vulnerability (CVE-2026-96238)

Bug Fix(es) and Enhancement(s):

  • Update .NET 8.0 to SDK 8.0.132 and Runtime 8.0.32 [almalinux-9.8.z] (JIRA:AlmaLinux-277793)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
ALSA-2026:86169
Updated
2026-11-02
OSVALSA-2026:86594 No score

Critical: .NET 8.0 security, bug fix, and enhancement update

.NET is a fast, lightweight and modular platform for creating cross platform applications that work on Linux, macOS and Windows. It particularly focuses on creating console applications, web applications and micro-services. .NET contains a runtime conforming to .NET Standards a set of framework libraries, an SDK containing compilers and a 'dotnet' application to drive everything.

SDK version: 8.0.132
Runtime version: 8.0.32

Security Fix(es):

  • dotnet10.0: dotnet9.0: dotnet: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-58280)
  • dotnet10.0: dotnet8.0: dotnet9.0: dotnet: .NET Information Disclosure Vulnerability (CVE-2026-66822)
  • dotnet9.0: dotnet: dotnet10.0: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-69651)
  • dotnet8.0: dotnet10.0: dotnet: dotnet9.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70159)
  • dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70175)
  • dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70179)
  • dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70181)
  • dotnet: dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70183)
  • dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70186)
  • dotnet: ASP.NET Core Security Feature Bypass Vulnerability (CVE-2026-70188)
  • dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70196)
  • dotnet: ASP.NET Core Tampering Vulnerability (CVE-2026-88092)
  • dotnet10.0: dotnet8.0: dotnet9.0: dotnet: MessagePack: Nested arrays can blow past buffer length limits (CVE-2026-92707)
  • dotnet8.0: Active Directory Federation Services (AD FS) Spoofing Vulnerability (CVE-2026-96222)
  • dotnet: dotnet8.0: dotnet9.0: dotnet10.0: .NET Elevation of Privilege Vulnerability (CVE-2026-96225)
  • dotnet9.0: dotnet10.0: dotnet8.0: dotnet: ASP.NET Core Remote Code Execution Vulnerability (CVE-2026-96230)
  • dotnet: dotnet9.0: dotnet10.0: dotnet8.0: .NET Elevation of Privilege Vulnerability (CVE-2026-96231)
  • dotnet10.0: dotnet: dotnet8.0: dotnet9.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-96233)
  • dotnet: dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-96236)
  • dotnet8.0: dotnet10.0: dotnet9.0: .NET Remote Code Execution Vulnerability (CVE-2026-96237)
  • dotnet8.0: dotnet10.0: dotnet9.0: dotnet: .NET Security Feature Bypass Vulnerability (CVE-2026-96238)

Bug Fix(es) and Enhancement(s):

  • Update .NET 8.0 to SDK 8.0.132 and Runtime 8.0.32 (JIRA:AlmaLinux-277790)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
ALSA-2026:86594
Updated
2026-11-03
OSVBIT-dotnet-2026-96222 No score

Active Directory Federation Services (AD FS) Spoofing Vulnerability

Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

Record
BIT-dotnet-2026-96222
Updated
2026-11-02
OSVBIT-dotnet-sdk-2026-96222 No score

Active Directory Federation Services (AD FS) Spoofing Vulnerability

Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

Record
BIT-dotnet-sdk-2026-96222
Updated
2026-11-02
OSVROOT-APP-NUGET-CVE-2026-96222 No score

CVE-2026-96222 in System.Security.Cryptography.Xml - Patched by Root

Root has patched CVE-2026-96222 in the System.Security.Cryptography.Xml package for Root:NuGet. Multiple fixed versions available.

Record
ROOT-APP-NUGET-CVE-2026-96222
Updated
2026-11-02
OSVUSN-8942-1 No score

dotnet8, dotnet10, dotnet11 vulnerabilities

Multiple security issues were discovered in .NET and this update includes new upstream .NET versions to fix these issues.

.NET 8 has been updated to 8.0.32 in Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. .NET 10 has been updated to 10.0.13 in Ubuntu 24.04 LTS, Ubuntu 26.04 LTS and Ubuntu 26.10. .NET 11 has been updated to 11.0.0~rc2 in Ubuntu 26.10.

In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes.

Record
USN-8942-1
Updated
2026-11-02

Affected products

Show 17 moreShow less

Affected packages

Affected packages
PackageAffectedFixed
System.Security.Cryptography.Xml
NuGet
 8.0.0 to 8.0.4
8.0.5
dotnet8-runtime
Alpine:v3.22
 before 8.0.32-r0
8.0.32-r0
dotnet8-runtime
Alpine:v3.23
 before 8.0.32-r0
8.0.32-r0
dotnet8-runtime
Alpine:v3.24
 before 8.0.32-r0
8.0.32-r0
aspnetcore-runtime-8.0
AlmaLinux:10
From an advisory covering 25 CVEs
 before 8.0.32-1.el10_2
8.0.32-1.el10_2
aspnetcore-runtime-dbg-8.0
AlmaLinux:10
From an advisory covering 25 CVEs
 before 8.0.32-1.el10_2
8.0.32-1.el10_2
aspnetcore-targeting-pack-8.0
AlmaLinux:10
From an advisory covering 25 CVEs
 before 8.0.32-1.el10_2
8.0.32-1.el10_2
dotnet-apphost-pack-8.0
AlmaLinux:10
From an advisory covering 25 CVEs
 before 8.0.32-1.el10_2
8.0.32-1.el10_2
dotnet-hostfxr-8.0
AlmaLinux:10
From an advisory covering 25 CVEs
 before 8.0.32-1.el10_2
8.0.32-1.el10_2
dotnet-runtime-8.0
AlmaLinux:10
From an advisory covering 25 CVEs
 before 8.0.32-1.el10_2
8.0.32-1.el10_2
Show 61 moreShow less
Affected packages
PackageAffectedFixed
dotnet-runtime-dbg-8.0
AlmaLinux:10
From an advisory covering 25 CVEs
 before 8.0.32-1.el10_2
8.0.32-1.el10_2
dotnet-sdk-8.0
AlmaLinux:10
From an advisory covering 25 CVEs
 before 8.0.132-1.el10_2
8.0.132-1.el10_2
dotnet-sdk-8.0-source-built-artifacts
AlmaLinux:10
From an advisory covering 25 CVEs
 before 8.0.132-1.el10_2
8.0.132-1.el10_2
dotnet-sdk-dbg-8.0
AlmaLinux:10
From an advisory covering 25 CVEs
 before 8.0.132-1.el10_2
8.0.132-1.el10_2
dotnet-targeting-pack-8.0
AlmaLinux:10
From an advisory covering 25 CVEs
 before 8.0.32-1.el10_2
8.0.32-1.el10_2
dotnet-templates-8.0
AlmaLinux:10
From an advisory covering 25 CVEs
 before 8.0.132-1.el10_2
8.0.132-1.el10_2
aspnetcore-runtime-8.0
AlmaLinux:9
From an advisory covering 25 CVEs
 before 8.0.32-1.el9_8
8.0.32-1.el9_8
aspnetcore-runtime-dbg-8.0
AlmaLinux:9
From an advisory covering 25 CVEs
 before 8.0.32-1.el9_8
8.0.32-1.el9_8
aspnetcore-targeting-pack-8.0
AlmaLinux:9
From an advisory covering 25 CVEs
 before 8.0.32-1.el9_8
8.0.32-1.el9_8
dotnet-apphost-pack-8.0
AlmaLinux:9
From an advisory covering 25 CVEs
 before 8.0.32-1.el9_8
8.0.32-1.el9_8
dotnet-hostfxr-8.0
AlmaLinux:9
From an advisory covering 25 CVEs
 before 8.0.32-1.el9_8
8.0.32-1.el9_8
dotnet-runtime-8.0
AlmaLinux:9
From an advisory covering 25 CVEs
 before 8.0.32-1.el9_8
8.0.32-1.el9_8
dotnet-runtime-dbg-8.0
AlmaLinux:9
From an advisory covering 25 CVEs
 before 8.0.32-1.el9_8
8.0.32-1.el9_8
dotnet-sdk-8.0
AlmaLinux:9
From an advisory covering 25 CVEs
 before 8.0.132-1.el9_8
8.0.132-1.el9_8
dotnet-sdk-8.0-source-built-artifacts
AlmaLinux:9
From an advisory covering 25 CVEs
 before 8.0.132-1.el9_8
8.0.132-1.el9_8
dotnet-sdk-dbg-8.0
AlmaLinux:9
From an advisory covering 25 CVEs
 before 8.0.132-1.el9_8
8.0.132-1.el9_8
dotnet-targeting-pack-8.0
AlmaLinux:9
From an advisory covering 25 CVEs
 before 8.0.32-1.el9_8
8.0.32-1.el9_8
dotnet-templates-8.0
AlmaLinux:9
From an advisory covering 25 CVEs
 before 8.0.132-1.el9_8
8.0.132-1.el9_8
aspnetcore-runtime-8.0
AlmaLinux:8
From an advisory covering 25 CVEs
 before 8.0.32-2.el8_10
8.0.32-2.el8_10
aspnetcore-runtime-dbg-8.0
AlmaLinux:8
From an advisory covering 25 CVEs
 before 8.0.32-2.el8_10
8.0.32-2.el8_10
aspnetcore-targeting-pack-8.0
AlmaLinux:8
From an advisory covering 25 CVEs
 before 8.0.32-2.el8_10
8.0.32-2.el8_10
dotnet-apphost-pack-8.0
AlmaLinux:8
From an advisory covering 25 CVEs
 before 8.0.32-2.el8_10
8.0.32-2.el8_10
dotnet-hostfxr-8.0
AlmaLinux:8
From an advisory covering 25 CVEs
 before 8.0.32-2.el8_10
8.0.32-2.el8_10
dotnet-runtime-8.0
AlmaLinux:8
From an advisory covering 25 CVEs
 before 8.0.32-2.el8_10
8.0.32-2.el8_10
dotnet-runtime-dbg-8.0
AlmaLinux:8
From an advisory covering 25 CVEs
 before 8.0.32-2.el8_10
8.0.32-2.el8_10
dotnet-sdk-8.0
AlmaLinux:8
From an advisory covering 25 CVEs
 before 8.0.132-2.el8_10
8.0.132-2.el8_10
dotnet-sdk-8.0-source-built-artifacts
AlmaLinux:8
From an advisory covering 25 CVEs
 before 8.0.132-2.el8_10
8.0.132-2.el8_10
dotnet-sdk-dbg-8.0
AlmaLinux:8
From an advisory covering 25 CVEs
 before 8.0.132-2.el8_10
8.0.132-2.el8_10
dotnet-targeting-pack-8.0
AlmaLinux:8
From an advisory covering 25 CVEs
 before 8.0.32-2.el8_10
8.0.32-2.el8_10
dotnet-templates-8.0
AlmaLinux:8
From an advisory covering 25 CVEs
 before 8.0.132-2.el8_10
8.0.132-2.el8_10
dotnet
Bitnami
 8.0.0 up to 8.0.5
8.0.5
dotnet-sdk
Bitnami
 8.0.0 up to 8.0.5
8.0.5
System.Security.Cryptography.Xml
NuGet
 8.0.0 up to 8.0.5, plus listed versions
8.0.18.0.28.0.38.0.4
8.0.5
dotnet-sdk-8.0
Red Hat:hummingbird:1
From an advisory covering 11 CVEs
 before 0:8.0.132-0.1.hum1
0:8.0.132-0.1.hum1
dotnet-sdk-8.0-source-built-artifacts
Red Hat:hummingbird:1
From an advisory covering 11 CVEs
 before 0:8.0.132-0.1.hum1
0:8.0.132-0.1.hum1
dotnet-sdk-dbg-8.0
Red Hat:hummingbird:1
From an advisory covering 11 CVEs
 before 0:8.0.132-0.1.hum1
0:8.0.132-0.1.hum1
dotnet-templates-8.0
Red Hat:hummingbird:1
From an advisory covering 11 CVEs
 before 0:8.0.132-0.1.hum1
0:8.0.132-0.1.hum1
dotnet8.0
Red Hat:hummingbird:1
From an advisory covering 11 CVEs
 before 0:8.0.132-0.1.hum1
0:8.0.132-0.1.hum1
aspnetcore-runtime-8.0
Red Hat:hummingbird:1
From an advisory covering 11 CVEs
 before 0:8.0.32-0.1.hum1
0:8.0.32-0.1.hum1
aspnetcore-runtime-dbg-8.0
Red Hat:hummingbird:1
From an advisory covering 11 CVEs
 before 0:8.0.32-0.1.hum1
0:8.0.32-0.1.hum1
aspnetcore-targeting-pack-8.0
Red Hat:hummingbird:1
From an advisory covering 11 CVEs
 before 0:8.0.32-0.1.hum1
0:8.0.32-0.1.hum1
dotnet-apphost-pack-8.0
Red Hat:hummingbird:1
From an advisory covering 11 CVEs
 before 0:8.0.32-0.1.hum1
0:8.0.32-0.1.hum1
dotnet-hostfxr-8.0
Red Hat:hummingbird:1
From an advisory covering 11 CVEs
 before 0:8.0.32-0.1.hum1
0:8.0.32-0.1.hum1
dotnet-runtime-8.0
Red Hat:hummingbird:1
From an advisory covering 11 CVEs
 before 0:8.0.32-0.1.hum1
0:8.0.32-0.1.hum1
dotnet-runtime-dbg-8.0
Red Hat:hummingbird:1
From an advisory covering 11 CVEs
 before 0:8.0.32-0.1.hum1
0:8.0.32-0.1.hum1
dotnet-targeting-pack-8.0
Red Hat:hummingbird:1
From an advisory covering 11 CVEs
 before 0:8.0.32-0.1.hum1
0:8.0.32-0.1.hum1
dotnet8.0
Rocky Linux:10
From an advisory covering 21 CVEs
 before 0:8.0.132-1.el10_2
0:8.0.132-1.el10_2
dotnet8.0
Rocky Linux:9
From an advisory covering 21 CVEs
 before 0:8.0.132-1.el9_8
0:8.0.132-1.el9_8
dotnet8.0
Rocky Linux:8
From an advisory covering 21 CVEs
 before 0:8.0.132-2.el8_10
0:8.0.132-2.el8_10
System.Security.Cryptography.Xml
Root:NuGet
 before 8.0.3.416104
8.0.3.416104
Rootio.System.Security.Cryptography.Xml
Root:NuGet
 before 8.0.3.120074
8.0.3.120074
dotnet6
Ubuntu:22.04:LTS
 All versions, plus listed versions
6.0.108-0ubuntu1~22.04.16.0.109-0ubuntu1~22.04.16.0.110-0ubuntu1~22.04.16.0.111-0ubuntu1~22.04.16.0.113-0ubuntu1~22.04.1
Show 16 moreShow less
6.0.116-0ubuntu1~22.04.16.0.118-0ubuntu1~22.04.16.0.119-0ubuntu1~22.04.16.0.120-0ubuntu1~22.04.16.0.121-0ubuntu1~22.04.16.0.122-0ubuntu1~22.04.16.0.123-0ubuntu1~22.04.16.0.124-0ubuntu1~22.04.16.0.125-0ubuntu1~22.04.16.0.126-0ubuntu1~22.04.16.0.127-0ubuntu1~22.04.16.0.128-0ubuntu1~22.04.26.0.132-0ubuntu1~22.04.16.0.133-0ubuntu1~22.04.16.0.135-0ubuntu1~22.04.16.0.136-0ubuntu1~22.04.1
 None known
dotnet7
Ubuntu:22.04:LTS
 All versions, plus listed versions
7.0.105-0ubuntu1~22.04.17.0.107-0ubuntu1~22.04.17.0.108-0ubuntu1~22.04.17.0.109-0ubuntu1~22.04.17.0.110-0ubuntu1~22.04.1
Show 9 moreShow less
7.0.111-0ubuntu1~22.04.17.0.112-0ubuntu1~22.04.17.0.113-0ubuntu1~22.04.17.0.114-0ubuntu1~22.04.17.0.115-0ubuntu1~22.04.17.0.116-0ubuntu1~22.04.17.0.117-0ubuntu1~22.04.17.0.117-0ubuntu1~22.04.27.0.119-0ubuntu1~22.04.1
 None known
dotnet8
Ubuntu:22.04:LTS
 before 8.0.132-8.0.32-0ubuntu1~22.04.1, plus listed versions
8.0.102-8.0.2-0ubuntu1~22.04.18.0.103-8.0.3-0ubuntu1~22.04.18.0.103-8.0.3-0ubuntu1~22.04.28.0.105-8.0.5-0ubuntu1~22.04.18.0.107-8.0.7-0ubuntu1~22.04.1
Show 22 moreShow less
8.0.108-8.0.8-0ubuntu1~22.04.18.0.110-8.0.10-0ubuntu1~22.04.18.0.111-8.0.11-0ubuntu1~22.04.18.0.112-8.0.12-0ubuntu1~22.04.18.0.114-8.0.14-0ubuntu1~22.04.18.0.115-8.0.15-0ubuntu1~22.04.18.0.116-8.0.16-0ubuntu1~22.04.18.0.117-8.0.17-0ubuntu1~22.04.18.0.118-8.0.18-0ubuntu1~22.04.18.0.119-8.0.19-0ubuntu1~22.04.18.0.120-8.0.20-0ubuntu1~22.04.18.0.121-8.0.21-0ubuntu1~22.04.18.0.122-8.0.22-0ubuntu1~22.04.18.0.123-8.0.23-0ubuntu1~22.04.18.0.124-8.0.24-0ubuntu1~22.04.18.0.125-8.0.25-0ubuntu1~22.04.18.0.126-8.0.26-0ubuntu1~22.04.18.0.127-8.0.27-0ubuntu1~22.04.18.0.128-8.0.28-0ubuntu1~22.04.18.0.129-8.0.29-0ubuntu1~22.04.18.0.130-8.0.30-0ubuntu1~22.04.18.0.131-8.0.31-0ubuntu1~22.04.1
8.0.132-8.0.32-0ubuntu1~22.04.1
dotnet8
Ubuntu:24.04:LTS
 before 8.0.132-8.0.32-0ubuntu1~24.04.1, plus listed versions
8.0.100-8.0.0~rc1-0ubuntu18.0.100-8.0.0~rc2-0ubuntu18.0.100-8.0.0~rc2-0ubuntu28.0.100-8.0.0-0ubuntu18.0.100-8.0.0-0ubuntu2
Show 31 moreShow less
8.0.101-8.0.1-0ubuntu18.0.101-8.0.1-0ubuntu28.0.102-8.0.2-0ubuntu18.0.103-8.0.3-0ubuntu28.0.103-8.0.3-0ubuntu38.0.104-8.0.4-0ubuntu18.0.105-8.0.5-0ubuntu1~24.04.18.0.107-8.0.7-0ubuntu1~24.04.18.0.108-8.0.8-0ubuntu1~24.04.18.0.108-8.0.8-0ubuntu1~24.04.28.0.110-8.0.10-0ubuntu1~24.04.18.0.111-8.0.11-0ubuntu1~24.04.18.0.112-8.0.12-0ubuntu1~24.04.18.0.114-8.0.14-0ubuntu1~24.04.18.0.115-8.0.15-0ubuntu1~24.04.18.0.116-8.0.16-0ubuntu1~24.04.18.0.117-8.0.17-0ubuntu1~24.04.18.0.118-8.0.18-0ubuntu1~24.04.18.0.119-8.0.19-0ubuntu1~24.04.18.0.120-8.0.20-0ubuntu1~24.04.18.0.121-8.0.21-0ubuntu1~24.04.18.0.122-8.0.22-0ubuntu1~24.04.18.0.123-8.0.23-0ubuntu1~24.04.18.0.124-8.0.24-0ubuntu1~24.04.18.0.125-8.0.25-0ubuntu1~24.04.18.0.126-8.0.26-0ubuntu1~24.04.18.0.127-8.0.27-0ubuntu1~24.04.18.0.128-8.0.28-0ubuntu1~24.04.18.0.129-8.0.29-0ubuntu1~24.04.18.0.130-8.0.30-0ubuntu1~24.04.18.0.131-8.0.31-0ubuntu1~24.04.1
8.0.132-8.0.32-0ubuntu1~24.04.1
dotnet8
Ubuntu:22.04:LTS
From an advisory covering 28 CVEs
 before 8.0.132-8.0.32-0ubuntu1~22.04.1, plus listed versions
8.0.102-8.0.2-0ubuntu1~22.04.18.0.103-8.0.3-0ubuntu1~22.04.18.0.103-8.0.3-0ubuntu1~22.04.28.0.105-8.0.5-0ubuntu1~22.04.18.0.107-8.0.7-0ubuntu1~22.04.1
Show 22 moreShow less
8.0.108-8.0.8-0ubuntu1~22.04.18.0.110-8.0.10-0ubuntu1~22.04.18.0.111-8.0.11-0ubuntu1~22.04.18.0.112-8.0.12-0ubuntu1~22.04.18.0.114-8.0.14-0ubuntu1~22.04.18.0.115-8.0.15-0ubuntu1~22.04.18.0.116-8.0.16-0ubuntu1~22.04.18.0.117-8.0.17-0ubuntu1~22.04.18.0.118-8.0.18-0ubuntu1~22.04.18.0.119-8.0.19-0ubuntu1~22.04.18.0.120-8.0.20-0ubuntu1~22.04.18.0.121-8.0.21-0ubuntu1~22.04.18.0.122-8.0.22-0ubuntu1~22.04.18.0.123-8.0.23-0ubuntu1~22.04.18.0.124-8.0.24-0ubuntu1~22.04.18.0.125-8.0.25-0ubuntu1~22.04.18.0.126-8.0.26-0ubuntu1~22.04.18.0.127-8.0.27-0ubuntu1~22.04.18.0.128-8.0.28-0ubuntu1~22.04.18.0.129-8.0.29-0ubuntu1~22.04.18.0.130-8.0.30-0ubuntu1~22.04.18.0.131-8.0.31-0ubuntu1~22.04.1
8.0.132-8.0.32-0ubuntu1~22.04.1
dotnet10
Ubuntu:24.04:LTS
From an advisory covering 28 CVEs
 before 10.0.113-10.0.13-0ubuntu1~24.04.1, plus listed versions
10.0.100-10.0.0-0ubuntu1~24.04.110.0.101-10.0.1-0ubuntu1~24.04.210.0.103-10.0.3-0ubuntu1~24.04.110.0.104-10.0.4-0ubuntu1~24.04.110.0.105-10.0.5-0ubuntu1~24.04.1
Show 7 moreShow less
10.0.106-10.0.6-0ubuntu1~24.04.110.0.107-10.0.7-0ubuntu1~24.04.110.0.108-10.0.8-0ubuntu1~24.04.110.0.109-10.0.9-0ubuntu1~24.04.110.0.110-10.0.10-0ubuntu1~24.04.110.0.111-10.0.11-0ubuntu1~24.04.110.0.112-10.0.12-0ubuntu1~24.04.1
10.0.113-10.0.13-0ubuntu1~24.04.1
dotnet8
Ubuntu:24.04:LTS
From an advisory covering 28 CVEs
 before 8.0.132-8.0.32-0ubuntu1~24.04.1, plus listed versions
8.0.100-8.0.0~rc1-0ubuntu18.0.100-8.0.0~rc2-0ubuntu18.0.100-8.0.0~rc2-0ubuntu28.0.100-8.0.0-0ubuntu18.0.100-8.0.0-0ubuntu2
Show 31 moreShow less
8.0.101-8.0.1-0ubuntu18.0.101-8.0.1-0ubuntu28.0.102-8.0.2-0ubuntu18.0.103-8.0.3-0ubuntu28.0.103-8.0.3-0ubuntu38.0.104-8.0.4-0ubuntu18.0.105-8.0.5-0ubuntu1~24.04.18.0.107-8.0.7-0ubuntu1~24.04.18.0.108-8.0.8-0ubuntu1~24.04.18.0.108-8.0.8-0ubuntu1~24.04.28.0.110-8.0.10-0ubuntu1~24.04.18.0.111-8.0.11-0ubuntu1~24.04.18.0.112-8.0.12-0ubuntu1~24.04.18.0.114-8.0.14-0ubuntu1~24.04.18.0.115-8.0.15-0ubuntu1~24.04.18.0.116-8.0.16-0ubuntu1~24.04.18.0.117-8.0.17-0ubuntu1~24.04.18.0.118-8.0.18-0ubuntu1~24.04.18.0.119-8.0.19-0ubuntu1~24.04.18.0.120-8.0.20-0ubuntu1~24.04.18.0.121-8.0.21-0ubuntu1~24.04.18.0.122-8.0.22-0ubuntu1~24.04.18.0.123-8.0.23-0ubuntu1~24.04.18.0.124-8.0.24-0ubuntu1~24.04.18.0.125-8.0.25-0ubuntu1~24.04.18.0.126-8.0.26-0ubuntu1~24.04.18.0.127-8.0.27-0ubuntu1~24.04.18.0.128-8.0.28-0ubuntu1~24.04.18.0.129-8.0.29-0ubuntu1~24.04.18.0.130-8.0.30-0ubuntu1~24.04.18.0.131-8.0.31-0ubuntu1~24.04.1
8.0.132-8.0.32-0ubuntu1~24.04.1
dotnet10
Ubuntu:26.10
From an advisory covering 28 CVEs
 before 10.0.113-10.0.13-0ubuntu1~26.10.1, plus listed versions
10.0.105-10.0.5-0ubuntu110.0.107-10.0.7-0ubuntu1~26.04.110.0.108-10.0.8-0ubuntu110.0.109-10.0.9-0ubuntu110.0.110-10.0.10-0ubuntu310.0.111-10.0.11-0ubuntu110.0.112-10.0.12-0ubuntu110.0.112-10.0.12-0ubuntu2
10.0.113-10.0.13-0ubuntu1~26.10.1
dotnet11
Ubuntu:26.10
From an advisory covering 28 CVEs
 before 11.0.100-11.0.0~rc2-0ubuntu1~26.10.1, plus listed versions
11.0.100-11.0.0~rc1-0ubuntu1
11.0.100-11.0.0~rc2-0ubuntu1~26.10.1
dotnet10
Ubuntu:26.04:LTS
From an advisory covering 28 CVEs
 before 10.0.113-10.0.13-0ubuntu1~26.04.1, plus listed versions
10.0.100-10.0.0~rc1-0ubuntu110.0.100-10.0.0~rc2-0ubuntu110.0.100-10.0.0-0ubuntu110.0.100-10.0.0-0ubuntu210.0.101-10.0.1-0ubuntu1
Show 12 moreShow less
10.0.101-10.0.1-0ubuntu210.0.101-10.0.1-0ubuntu310.0.102-10.0.2-0ubuntu110.0.103-10.0.3-0ubuntu110.0.104-10.0.4-0ubuntu110.0.105-10.0.5-0ubuntu110.0.107-10.0.7-0ubuntu1~26.04.110.0.108-10.0.8-0ubuntu1~26.04.110.0.109-10.0.9-0ubuntu1~26.04.110.0.110-10.0.10-0ubuntu1~26.04.110.0.111-10.0.11-0ubuntu1~26.04.110.0.112-10.0.12-0ubuntu1~26.04.1
10.0.113-10.0.13-0ubuntu1~26.04.1

History

History
RecordedChangedSources
affected, facts
affected, aliases, referencesOSV
affected, aliases, references
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-96222 is a high vulnerability (CVSS 7.4) in Microsoft .net, published October 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.59%, the 48th percentile. Fixed in System.Security.Cryptography.Xml 8.0.5.

References

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This page doesn't list everything

Left out here: the rest of 2 source descriptions. The JSON record has them.

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