CVE-2026-96233: ASP.NET Core Denial of Service Vulnerability

Published Oct 13, 2026
·
Updated

Executive summary

Microsoft is releasing this security advisory to provide information about a vulnerability in System.Runtime. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.

DateTime Hebrew-number parsing can read outside expected stack bounds and terminate the process.

Announcement

Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/481

CVSS Details

- Version: 3.1 - Severity: High - Score: 7.5 - Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

- Weakness: CWE-787 (Out-of-bounds Write) 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 ------------ | ---------------- | --------------- Microsoft.NETCore.App.Runtime.linux-arm | >= 10.0.0, <= 10.0.12 | 10.0.13 Microsoft.NETCore.App.Runtime.linux-arm64 | >= 10.0.0, <= 10.0.12 | 10.0.13 Microsoft.NETCore.App.Runtime.linux-musl-arm | >= 10.0.0, <= 10.0.12 | 10.0.13 Microsoft.NETCore.App.Runtime.linux-musl-arm64 | >= 10.0.0, <= 10.0.12 | 10.0.13 Microsoft.NETCore.App.Runtime.linux-musl-x64 | >= 10.0.0, <= 10.0.12 | 10.0.13 Microsoft.NETCore.App.Runtime.linux-x64 | >= 10.0.0, <= 10.0.12 | 10.0.13 Microsoft.NETCore.App.Runtime.osx-arm64 | >= 10.0.0, <= 10.0.12 | 10.0.13 Microsoft.NETCore.App.Runtime.osx-x64 | >= 10.0.0, <= 10.0.12 | 10.0.13 Microsoft.NETCore.App.Runtime.win-arm | >= 10.0.0, <= 10.0.12 | 10.0.13 Microsoft.NETCore.App.Runtime.win-arm64 | >= 10.0.0, <= 10.0.12 | 10.0.13 Microsoft.NETCore.App.Runtime.win-x64 | >= 10.0.0, <= 10.0.12 | 10.0.13 Microsoft.NETCore.App.Runtime.win-x86 | >= 10.0.0, <= 10.0.12 | 10.0.13 Microsoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 Microsoft.NETCore.App.Runtime.linux-arm64 | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 Microsoft.NETCore.App.Runtime.linux-musl-arm | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 Microsoft.NETCore.App.Runtime.linux-musl-arm64 | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 Microsoft.NETCore.App.Runtime.linux-musl-x64 | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 Microsoft.NETCore.App.Runtime.linux-x64 | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 Microsoft.NETCore.App.Runtime.osx-arm64 | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 Microsoft.NETCore.App.Runtime.osx-x64 | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 Microsoft.NETCore.App.Runtime.win-arm | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 Microsoft.NETCore.App.Runtime.win-arm64 | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 Microsoft.NETCore.App.Runtime.win-x64 | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 Microsoft.NETCore.App.Runtime.win-x86 | >= 11.0.0-preview.1, <= 11.0.0-rc.1 | 11.0.0-rc.2 Microsoft.NETCore.App.Runtime.linux-arm | >= 9.0.0, <= 9.0.20 | 9.0.21 Microsoft.NETCore.App.Runtime.linux-arm64 | >= 9.0.0, <= 9.0.20 | 9.0.21 Microsoft.NETCore.App.Runtime.linux-musl-arm | >= 9.0.0, <= 9.0.20 | 9.0.21 Microsoft.NETCore.App.Runtime.linux-musl-arm64 | >= 9.0.0, <= 9.0.20 | 9.0.21 Microsoft.NETCore.App.Runtime.linux-musl-x64 | >= 9.0.0, <= 9.0.20 | 9.0.21 Microsoft.NETCore.App.Runtime.linux-x64 | >= 9.0.0, <= 9.0.20 | 9.0.21 Microsoft.NETCore.App.Runtime.osx-arm64 | >= 9.0.0, <= 9.0.20 | 9.0.21 Microsoft.NETCore.App.Runtime.osx-x64 | >= 9.0.0, <= 9.0.20 | 9.0.21 Microsoft.NETCore.App.Runtime.win-arm | >= 9.0.0, <= 9.0.20 | 9.0.21 Microsoft.NETCore.App.Runtime.win-arm64 | >= 9.0.0, <= 9.0.20 | 9.0.21 Microsoft.NETCore.App.Runtime.win-x64 | >= 9.0.0, <= 9.0.20 | 9.0.21 Microsoft.NETCore.App.Runtime.win-x86 | >= 9.0.0, <= 9.0.20 | 9.0.21 Microsoft.NETCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.31 | 8.0.32 Microsoft.NETCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.31 | 8.0.32 Microsoft.NETCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.31 | 8.0.32 Microsoft.NETCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.31 | 8.0.32 Microsoft.NETCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.31 | 8.0.32 Microsoft.NETCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.31 | 8.0.32 Microsoft.NETCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.31 | 8.0.32 Microsoft.NETCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.31 | 8.0.32 Microsoft.NETCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.31 | 8.0.32 Microsoft.NETCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.31 | 8.0.32 Microsoft.NETCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.31 | 8.0.32 Microsoft.NETCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.31 | 8.0.32

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

CVE-2026-96233

Acknowledgements

- s3zer0

Revisions

V1.0 (10/13/2026): Advisory published.

Other sources

ASP.NET Core Denial of Service Vulnerability

— Microsoft

Out-of-bounds write in ASP.NET Core allows an unauthorized attacker to deny service over a network.

— Microsoft

Affected Software

100 affected componentsFixes available
Microsoft ASP.NET Core
Microsoft .NET Framework=4.8.1
4.8.9363.0
nuget/microsoft.netcore.app.runtime.win-x86>=8.0.0<=8.0.31
8.0.32
nuget/microsoft.netcore.app.runtime.win-x64>=8.0.0<=8.0.31
8.0.32
nuget/microsoft.netcore.app.runtime.win-arm64>=8.0.0<=8.0.31
8.0.32
nuget/microsoft.netcore.app.runtime.win-arm>=8.0.0<=8.0.31
8.0.32
nuget/microsoft.netcore.app.runtime.osx-x64>=8.0.0<=8.0.31
8.0.32
nuget/microsoft.netcore.app.runtime.osx-arm64>=8.0.0<=8.0.31
8.0.32
nuget/microsoft.netcore.app.runtime.linux-x64>=8.0.0<=8.0.31
8.0.32
nuget/microsoft.netcore.app.runtime.linux-musl-x64>=8.0.0<=8.0.31
8.0.32
nuget/microsoft.netcore.app.runtime.linux-musl-arm64>=8.0.0<=8.0.31
8.0.32
nuget/microsoft.netcore.app.runtime.linux-musl-arm>=8.0.0<=8.0.31
8.0.32
nuget/microsoft.netcore.app.runtime.linux-arm64>=8.0.0<=8.0.31
8.0.32
nuget/microsoft.netcore.app.runtime.linux-arm>=8.0.0<=8.0.31
8.0.32
nuget/microsoft.netcore.app.runtime.win-x86>=9.0.0<=9.0.20
9.0.21
nuget/microsoft.netcore.app.runtime.win-x64>=9.0.0<=9.0.20
9.0.21
nuget/microsoft.netcore.app.runtime.win-arm64>=9.0.0<=9.0.20
9.0.21
nuget/microsoft.netcore.app.runtime.win-arm>=9.0.0<=9.0.20
9.0.21
nuget/microsoft.netcore.app.runtime.osx-x64>=9.0.0<=9.0.20
9.0.21
nuget/microsoft.netcore.app.runtime.osx-arm64>=9.0.0<=9.0.20
9.0.21
nuget/microsoft.netcore.app.runtime.linux-x64>=9.0.0<=9.0.20
9.0.21
nuget/microsoft.netcore.app.runtime.linux-musl-x64>=9.0.0<=9.0.20
9.0.21
nuget/microsoft.netcore.app.runtime.linux-musl-arm64>=9.0.0<=9.0.20
9.0.21
nuget/microsoft.netcore.app.runtime.linux-musl-arm>=9.0.0<=9.0.20
9.0.21
nuget/microsoft.netcore.app.runtime.linux-arm64>=9.0.0<=9.0.20
9.0.21
nuget/microsoft.netcore.app.runtime.linux-arm>=9.0.0<=9.0.20
9.0.21
nuget/microsoft.netcore.app.runtime.win-x86>=11.0.0-preview.1<=11.0.0-rc.1
11.0.0-rc.2
nuget/microsoft.netcore.app.runtime.win-x64>=11.0.0-preview.1<=11.0.0-rc.1
11.0.0-rc.2
nuget/microsoft.netcore.app.runtime.win-arm64>=11.0.0-preview.1<=11.0.0-rc.1
11.0.0-rc.2
nuget/microsoft.netcore.app.runtime.win-arm>=11.0.0-preview.1<=11.0.0-rc.1
11.0.0-rc.2
nuget/microsoft.netcore.app.runtime.osx-x64>=11.0.0-preview.1<=11.0.0-rc.1
11.0.0-rc.2
nuget/microsoft.netcore.app.runtime.osx-arm64>=11.0.0-preview.1<=11.0.0-rc.1
11.0.0-rc.2
nuget/microsoft.netcore.app.runtime.linux-x64>=11.0.0-preview.1<=11.0.0-rc.1
11.0.0-rc.2
nuget/microsoft.netcore.app.runtime.linux-musl-x64>=11.0.0-preview.1<=11.0.0-rc.1
11.0.0-rc.2
nuget/microsoft.netcore.app.runtime.linux-musl-arm64>=11.0.0-preview.1<=11.0.0-rc.1
11.0.0-rc.2
nuget/microsoft.netcore.app.runtime.linux-musl-arm>=11.0.0-preview.1<=11.0.0-rc.1
11.0.0-rc.2
nuget/microsoft.netcore.app.runtime.linux-arm64>=11.0.0-preview.1<=11.0.0-rc.1
11.0.0-rc.2
nuget/microsoft.netcore.app.runtime.linux-arm>=11.0.0-preview.1<=11.0.0-rc.1
11.0.0-rc.2
nuget/microsoft.netcore.app.runtime.win-x86>=10.0.0<=10.0.12
10.0.13
nuget/microsoft.netcore.app.runtime.win-x64>=10.0.0<=10.0.12
10.0.13
nuget/microsoft.netcore.app.runtime.win-arm64>=10.0.0<=10.0.12
10.0.13
nuget/microsoft.netcore.app.runtime.win-arm>=10.0.0<=10.0.12
10.0.13
nuget/microsoft.netcore.app.runtime.osx-x64>=10.0.0<=10.0.12
10.0.13
nuget/microsoft.netcore.app.runtime.osx-arm64>=10.0.0<=10.0.12
10.0.13
nuget/microsoft.netcore.app.runtime.linux-x64>=10.0.0<=10.0.12
10.0.13
nuget/microsoft.netcore.app.runtime.linux-musl-x64>=10.0.0<=10.0.12
10.0.13
nuget/microsoft.netcore.app.runtime.linux-musl-arm64>=10.0.0<=10.0.12
10.0.13
nuget/microsoft.netcore.app.runtime.linux-musl-arm>=10.0.0<=10.0.12
10.0.13
nuget/microsoft.netcore.app.runtime.linux-arm64>=10.0.0<=10.0.12
10.0.13
nuget/microsoft.netcore.app.runtime.linux-arm>=10.0.0<=10.0.12
10.0.13
Microsoft .NET Framework>=4.8<4.8.4811.0
4.8.4811.0
Microsoft .NET Framework>=4.8<4.8.4811.0
4.8.4811.0
Microsoft .NET Framework=3.5, >=4.8<4.8.4811.0, >=2.0.50727<2.0.50727.9073, >=3.0.30729<3.0.30729.9070
2.0.50727.90733.0.30729.90704.8.4811.0
Microsoft .NET Framework=3.5, >=4.8<4.8.4811.0, >=2.0.50727<2.0.50727.9188, >=3.0.30729<3.0.30729.9171
2.0.50727.91883.0.30729.91714.8.4811.0
Microsoft .NET Framework>=4.8<4.8.4811.0
4.8.4811.0
Microsoft .NET Framework=4.6.2, >=4.7<4.7.4150.0, =4.7.1, =4.7.2
4.7.4150.0
Microsoft .NET Framework=4.6.2, >=4.7<4.7.4150.0, =4.7.1, =4.7.2
4.7.4150.0
Microsoft .NET Framework=3.5, >=4.8<4.8.4811.0, >=2.0.50727<2.0.50727.9188, >=3.0.30729<3.0.30729.9171
2.0.50727.91883.0.30729.91714.8.4811.0
Microsoft .NET Framework=3.5, =4.6.2, >=4.7<4.7.4150.0, =4.7.1, =4.7.2, >=2.0.50727<2.0.50727.9073, >=3.0.30729<3.0.30729.9070
2.0.50727.90733.0.30729.90704.7.4150.0
Microsoft .NET Framework=3.5, =4.6.2, >=4.7<4.7.4150.0, =4.7.1, =4.7.2, >=2.0.50727<2.0.50727.8987, >=3.0.30729<3.0.30729.8982
2.0.50727.89873.0.30729.89824.7.4150.0
Microsoft .NET Framework=3.5, >=2.0.50727<2.0.50727.8987, >=3.0.30729<3.0.30729.8982
2.0.50727.89873.0.30729.8982
Microsoft .NET Framework=3.5, =4.7.2, >=2.0.50727<2.0.50727.9073, >=3.0.30729<3.0.30729.9070
2.0.50727.90733.0.30729.90704.7.4150.0
All of the following
Microsoft .NET runtime>=9.0<9.0.21
9.0.21
Linux Linux*
All of the following
Microsoft .NET runtime>=9.0<9.0.21
9.0.21
Microsoft Windows*
Microsoft .NET Framework=3.5, >=2.0.50727<2.0.50727.8987, >=3.0.30729<3.0.30729.8982
2.0.50727.89873.0.30729.8982
Microsoft .NET Framework=3.5, >=2.0.50727<2.0.50727.9188, >=3.0.30729<3.0.30729.9171
2.0.50727.91883.0.30729.9171
All of the following
Microsoft .NET runtime>=11.0<11.0.0-rc.2
11.0.0-rc.2
Linux Linux*
All of the following
Microsoft .NET runtime>=8.0<8.0.32
8.0.32
Apple macOS*
All of the following
Microsoft .NET runtime>=9.0<9.0.21
9.0.21
Apple macOS*
All of the following
Microsoft .NET runtime>=8.0<8.0.32
8.0.32
Linux Linux*
All of the following
Microsoft .NET runtime>=11.0<11.0.0-rc.2
11.0.0-rc.2
Apple macOS*
All of the following
Microsoft .NET runtime>=8.0<8.0.32
8.0.32
Microsoft Windows*
All of the following
Microsoft .NET runtime>=10.0<10.0.13
10.0.13
Microsoft Windows*
All of the following
Microsoft .NET runtime>=10.0<10.0.13
10.0.13
Apple macOS*
Microsoft .NET Framework=3.5, =4.8.1, >=2.0.50727<2.0.50727.9188, >=3.0.30729<3.0.30729.9171
2.0.50727.91883.0.30729.91714.8.9363.0
Microsoft .NET Framework=3.5, =4.8.1, >=2.0.50727<2.0.50727.9188, >=3.0.30729<3.0.30729.9171
2.0.50727.91883.0.30729.91714.8.9363.0
All of the following
Microsoft .NET runtime>=11.0<11.0.0-rc.2
11.0.0-rc.2
Microsoft Windows*
Microsoft .NET Framework=3.5, =4.8.1, >=2.0.50727<2.0.50727.9188, >=3.0.30729<3.0.30729.9171
2.0.50727.91883.0.30729.91714.8.10008.0
All of the following
Microsoft .NET runtime>=10.0<10.0.13
10.0.13
Linux Linux*
Microsoft .NET Framework=3.5, =4.8.1, >=2.0.50727<2.0.50727.9188, >=3.0.30729<3.0.30729.9171
2.0.50727.91883.0.30729.91714.8.9363.0
alpine/dotnet10-runtime<10.0.13-r0
10.0.13-r0
alpine/dotnet10-runtime<10.0.13-r0
10.0.13-r0
alpine/dotnet8-runtime<8.0.32-r0
8.0.32-r0
alpine/dotnet8-runtime<8.0.32-r0
8.0.32-r0
alpine/dotnet8-runtime<8.0.32-r0
8.0.32-r0
alpine/dotnet9-runtime<9.0.21-r0
9.0.21-r0
alpine/dotnet9-runtime<9.0.21-r0
9.0.21-r0
alpine/dotnet9-runtime<9.0.21-r0
9.0.21-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 4.8.9363.0Patch KB5127691
  2. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.win-x86 to a version that resolves this vulnerability.

    Fixed in 8.0.32
  3. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.win-x64 to a version that resolves this vulnerability.

    Fixed in 8.0.32
  4. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.win-arm64 to a version that resolves this vulnerability.

    Fixed in 8.0.32
  5. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.win-arm to a version that resolves this vulnerability.

    Fixed in 8.0.32
  6. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.osx-x64 to a version that resolves this vulnerability.

    Fixed in 8.0.32
  7. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.osx-arm64 to a version that resolves this vulnerability.

    Fixed in 8.0.32
  8. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-x64 to a version that resolves this vulnerability.

    Fixed in 8.0.32
  9. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-musl-x64 to a version that resolves this vulnerability.

    Fixed in 8.0.32
  10. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-musl-arm64 to a version that resolves this vulnerability.

    Fixed in 8.0.32
  11. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-musl-arm to a version that resolves this vulnerability.

    Fixed in 8.0.32
  12. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-arm64 to a version that resolves this vulnerability.

    Fixed in 8.0.32
  13. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-arm to a version that resolves this vulnerability.

    Fixed in 8.0.32
  14. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.win-x86 to a version that resolves this vulnerability.

    Fixed in 9.0.21
  15. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.win-x64 to a version that resolves this vulnerability.

    Fixed in 9.0.21
  16. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.win-arm64 to a version that resolves this vulnerability.

    Fixed in 9.0.21
  17. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.win-arm to a version that resolves this vulnerability.

    Fixed in 9.0.21
  18. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.osx-x64 to a version that resolves this vulnerability.

    Fixed in 9.0.21
  19. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.osx-arm64 to a version that resolves this vulnerability.

    Fixed in 9.0.21
  20. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-x64 to a version that resolves this vulnerability.

    Fixed in 9.0.21
  21. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-musl-x64 to a version that resolves this vulnerability.

    Fixed in 9.0.21
  22. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-musl-arm64 to a version that resolves this vulnerability.

    Fixed in 9.0.21
  23. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-musl-arm to a version that resolves this vulnerability.

    Fixed in 9.0.21
  24. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-arm64 to a version that resolves this vulnerability.

    Fixed in 9.0.21
  25. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-arm to a version that resolves this vulnerability.

    Fixed in 9.0.21
  26. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.win-x86 to a version that resolves this vulnerability.

    Fixed in 11.0.0-rc.2
  27. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.win-x64 to a version that resolves this vulnerability.

    Fixed in 11.0.0-rc.2
  28. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.win-arm64 to a version that resolves this vulnerability.

    Fixed in 11.0.0-rc.2
  29. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.win-arm to a version that resolves this vulnerability.

    Fixed in 11.0.0-rc.2
  30. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.osx-x64 to a version that resolves this vulnerability.

    Fixed in 11.0.0-rc.2
  31. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.osx-arm64 to a version that resolves this vulnerability.

    Fixed in 11.0.0-rc.2
  32. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-x64 to a version that resolves this vulnerability.

    Fixed in 11.0.0-rc.2
  33. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-musl-x64 to a version that resolves this vulnerability.

    Fixed in 11.0.0-rc.2
  34. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-musl-arm64 to a version that resolves this vulnerability.

    Fixed in 11.0.0-rc.2
  35. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-musl-arm to a version that resolves this vulnerability.

    Fixed in 11.0.0-rc.2
  36. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-arm64 to a version that resolves this vulnerability.

    Fixed in 11.0.0-rc.2
  37. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-arm to a version that resolves this vulnerability.

    Fixed in 11.0.0-rc.2
  38. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.win-x86 to a version that resolves this vulnerability.

    Fixed in 10.0.13
  39. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.win-x64 to a version that resolves this vulnerability.

    Fixed in 10.0.13
  40. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.win-arm64 to a version that resolves this vulnerability.

    Fixed in 10.0.13
  41. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.win-arm to a version that resolves this vulnerability.

    Fixed in 10.0.13
  42. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.osx-x64 to a version that resolves this vulnerability.

    Fixed in 10.0.13
  43. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.osx-arm64 to a version that resolves this vulnerability.

    Fixed in 10.0.13
  44. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-x64 to a version that resolves this vulnerability.

    Fixed in 10.0.13
  45. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-musl-x64 to a version that resolves this vulnerability.

    Fixed in 10.0.13
  46. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-musl-arm64 to a version that resolves this vulnerability.

    Fixed in 10.0.13
  47. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-musl-arm to a version that resolves this vulnerability.

    Fixed in 10.0.13
  48. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-arm64 to a version that resolves this vulnerability.

    Fixed in 10.0.13
  49. Upgrade

    Upgrade nuget/Microsoft.NETCore.App.Runtime.linux-arm to a version that resolves this vulnerability.

    Fixed in 10.0.13
  50. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 4.8.4811.0Patch KB5127684
  51. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 4.8.4811.0Patch KB5127686
  52. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 2.0.50727.9188Fixed in 3.0.30729.9171Fixed in 4.8.4811.0Patch KB5127683
  53. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 2.0.50727.9073Fixed in 3.0.30729.9070Fixed in 4.8.4811.0Patch KB5127685
  54. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 4.8.4811.0Patch KB5127688
  55. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 4.7.4150.0Patch KB5127668
  56. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 4.7.4150.0Patch KB5127667
  57. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 2.0.50727.9188Fixed in 3.0.30729.9171Fixed in 4.8.4811.0Patch KB5127687
  58. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 2.0.50727.9073Fixed in 3.0.30729.9070Fixed in 4.7.4150.0Patch KB5127666
  59. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 2.0.50727.8987Fixed in 3.0.30729.8982Fixed in 4.7.4150.0Patch KB5126868
  60. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 2.0.50727.8987Fixed in 3.0.30729.8982Patch KB5127660
  61. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 9.0.21Patch KB5130035
  62. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 2.0.50727.8987Fixed in 3.0.30729.8982Patch KB5127664
  63. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 2.0.50727.9188Fixed in 3.0.30729.9171Patch KB5127696
  64. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 11.0.0-rc.2
  65. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 8.0.32Patch KB5130034
  66. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.13Patch KB5130036
  67. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 2.0.50727.9188Fixed in 3.0.30729.9171Fixed in 4.8.9363.0Patch KB5127692
  68. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 2.0.50727.9188Fixed in 3.0.30729.9171Fixed in 4.8.9363.0Patch KB5127689
  69. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 2.0.50727.9188Fixed in 3.0.30729.9171Fixed in 4.8.9363.0Patch KB5127690
  70. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 2.0.50727.9188Fixed in 3.0.30729.9171Fixed in 4.8.10008.0Patch KB5127694
  71. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 2.0.50727.9188Fixed in 3.0.30729.9171Fixed in 4.8.9363.0Patch KB5127693
  72. Upgrade

    Upgrade Microsoft.NETCore.App.Runtime.* packages to a version that resolves this vulnerability.

    Fixed in 8.0.32
  73. Upgrade

    Upgrade Microsoft.NETCore.App.Runtime.* packages to a version that resolves this vulnerability.

    Fixed in 9.0.21
  74. Upgrade

    Upgrade Microsoft.NETCore.App.Runtime.* packages to a version that resolves this vulnerability.

    Fixed in 10.0.13
  75. Upgrade

    Upgrade Microsoft.NETCore.App.Runtime.* packages to a version that resolves this vulnerability.

    Fixed in 11.0.0-rc.2
  76. Operational

    Recompile and redeploy self-contained applications targeting any of the impacted versions.

  77. Operational

    Restart applications after installing the updated runtime or SDK so the update takes effect.

Event History

Oct 13, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
CVE Published
via MITRE·07:01 PM
Data Sourced
via MITRE·07:01 PM
DescriptionSeverity
Data Sourced
via NVD·07:21 PM
DescriptionSeverityWeakness
Data Sourced
via OSV·07:21 PM
DescriptionSeverityAffected Software
Advisory Published
via GitHub·08:25 PM
Data Sourced
via GitHub·08:25 PM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

Who can exploit this vulnerability?

An unauthorized attacker can exploit it remotely over a network. No privileges or user interaction are required according to the supplied severity vector.

2

What is the expected impact of a successful exploit?

Successful exploitation can deny service to the affected ASP.NET Core application. The supplied vector indicates availability impact, with no stated confidentiality or integrity impact.

3

Is exploitation considered straightforward?

The supplied severity vector lists low attack complexity, indicating that exploitation does not require complex conditions. Exploit maturity is marked as unproven.

Company

Resources

Contact

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