RHSA-2026:99138: Important: .NET 11.0 security, bug fix, and enhancement update

Published Nov 11, 2026
·
Updated

.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: 11.0.100Runtime version: 11.0.0Security Fix(es): dotnet8.0: dotnet11.0: dotnet9.0: dotnet10.0: ASP.NET Core Information Disclosure Vulnerability (CVE-2026-109476) dotnet11.0: dotnet10.0: dotnet9.0: dotnet8.0: .NET Elevation of Privilege Vulnerability (CVE-2026-105544) dotnet8.0: dotnet9.0: dotnet11.0: dotnet10.0: .NET Denial of Service Vulnerability (CVE-2026-109475) dotnet11.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-109481) dotnet9.0: dotnet11.0: dotnet10.0: dotnet8.0: dotnet: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-114146) dotnet11.0: dotnet8.0: dotnet9.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-114147) dotnet11.0: dotnet8.0: dotnet9.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-114149) dotnet11.0: ASP.NET Core Information Disclosure Vulnerability (CVE-2026-114150) dotnet11.0: ASP.NET Core Security Feature Bypass Vulnerability (CVE-2026-114156) dotnet11.0: .NET Security Feature Bypass Vulnerability (CVE-2026-118746) dotnet11.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-118748) dotnet11.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-118749) dotnet11.0: .NET Denial of Service Vulnerability (CVE-2026-120796) dotnet10.0: dotnet11.0: .NET Elevation of Privilege Vulnerability (CVE-2026-114155) Bug Fix(es) and Enhancement(s): Update .NET 11.0 to SDK 11.0.100 and Runtime 11.0.0 [rhel-9.9.z] (JIRA:RHEL-302531) 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.

Affected Software

85 affected componentsFixes available
redhat/dotnet11.0<11.0.100-1.el9_9
11.0.100-1.el9_9
redhat/aspnetcore-runtime<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/aspnetcore-runtime-dbg<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/aspnetcore-targeting-pack<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-apphost-pack<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-apphost-pack<11.0-debuginfo-11.0.0-1.el9_9
11.0-debuginfo-11.0.0-1.el9_9
redhat/dotnet-host<11.0.0-1.el9_9
11.0.0-1.el9_9
redhat/dotnet-host-debuginfo<11.0.0-1.el9_9
11.0.0-1.el9_9
redhat/dotnet-hostfxr<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-hostfxr<11.0-debuginfo-11.0.0-1.el9_9
11.0-debuginfo-11.0.0-1.el9_9
redhat/dotnet-runtime<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-runtime<11.0-debuginfo-11.0.0-1.el9_9
11.0-debuginfo-11.0.0-1.el9_9
redhat/dotnet-runtime-dbg<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-sdk<11.0-11.0.100-1.el9_9
11.0-11.0.100-1.el9_9
redhat/dotnet-sdk<11.0-debuginfo-11.0.100-1.el9_9
11.0-debuginfo-11.0.100-1.el9_9
redhat/dotnet-sdk-aot<11.0-11.0.100-1.el9_9
11.0-11.0.100-1.el9_9
redhat/dotnet-sdk-aot<11.0-debuginfo-11.0.100-1.el9_9
11.0-debuginfo-11.0.100-1.el9_9
redhat/dotnet-sdk-dbg<11.0-11.0.100-1.el9_9
11.0-11.0.100-1.el9_9
redhat/dotnet-targeting-pack<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-templates<11.0-11.0.100-1.el9_9
11.0-11.0.100-1.el9_9
redhat/dotnet11.0-debuginfo<11.0.100-1.el9_9
11.0.100-1.el9_9
redhat/dotnet11.0-debugsource<11.0.100-1.el9_9
11.0.100-1.el9_9
redhat/aspnetcore-runtime<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/aspnetcore-runtime-dbg<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/aspnetcore-targeting-pack<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-apphost-pack<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-apphost-pack<11.0-debuginfo-11.0.0-1.el9_9
11.0-debuginfo-11.0.0-1.el9_9
redhat/dotnet-host<11.0.0-1.el9_9
11.0.0-1.el9_9
redhat/dotnet-host-debuginfo<11.0.0-1.el9_9
11.0.0-1.el9_9
redhat/dotnet-hostfxr<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-hostfxr<11.0-debuginfo-11.0.0-1.el9_9
11.0-debuginfo-11.0.0-1.el9_9
redhat/dotnet-runtime<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-runtime<11.0-debuginfo-11.0.0-1.el9_9
11.0-debuginfo-11.0.0-1.el9_9
redhat/dotnet-runtime-dbg<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-sdk<11.0-11.0.100-1.el9_9
11.0-11.0.100-1.el9_9
redhat/dotnet-sdk<11.0-debuginfo-11.0.100-1.el9_9
11.0-debuginfo-11.0.100-1.el9_9
redhat/dotnet-sdk-dbg<11.0-11.0.100-1.el9_9
11.0-11.0.100-1.el9_9
redhat/dotnet-targeting-pack<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-templates<11.0-11.0.100-1.el9_9
11.0-11.0.100-1.el9_9
redhat/dotnet11.0-debuginfo<11.0.100-1.el9_9
11.0.100-1.el9_9
redhat/dotnet11.0-debugsource<11.0.100-1.el9_9
11.0.100-1.el9_9
redhat/aspnetcore-runtime<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/aspnetcore-runtime-dbg<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/aspnetcore-targeting-pack<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-apphost-pack<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-apphost-pack<11.0-debuginfo-11.0.0-1.el9_9
11.0-debuginfo-11.0.0-1.el9_9
redhat/dotnet-host<11.0.0-1.el9_9
11.0.0-1.el9_9
redhat/dotnet-host-debuginfo<11.0.0-1.el9_9
11.0.0-1.el9_9
redhat/dotnet-hostfxr<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-hostfxr<11.0-debuginfo-11.0.0-1.el9_9
11.0-debuginfo-11.0.0-1.el9_9
redhat/dotnet-runtime<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-runtime<11.0-debuginfo-11.0.0-1.el9_9
11.0-debuginfo-11.0.0-1.el9_9
redhat/dotnet-runtime-dbg<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-sdk<11.0-11.0.100-1.el9_9
11.0-11.0.100-1.el9_9
redhat/dotnet-sdk<11.0-debuginfo-11.0.100-1.el9_9
11.0-debuginfo-11.0.100-1.el9_9
redhat/dotnet-sdk-dbg<11.0-11.0.100-1.el9_9
11.0-11.0.100-1.el9_9
redhat/dotnet-targeting-pack<11.0-11.0.0-1.el9_9
11.0-11.0.0-1.el9_9
redhat/dotnet-templates<11.0-11.0.100-1.el9_9
11.0-11.0.100-1.el9_9
redhat/dotnet11.0-debuginfo<11.0.100-1.el9_9
11.0.100-1.el9_9
redhat/dotnet11.0-debugsource<11.0.100-1.el9_9
11.0.100-1.el9_9
redhat/aspnetcore-runtime<11.0-11.0.0-1.el9_9.aa
11.0-11.0.0-1.el9_9.aa
redhat/aspnetcore-runtime-dbg<11.0-11.0.0-1.el9_9.aa
11.0-11.0.0-1.el9_9.aa
redhat/aspnetcore-targeting-pack<11.0-11.0.0-1.el9_9.aa
11.0-11.0.0-1.el9_9.aa
redhat/dotnet-apphost-pack<11.0-11.0.0-1.el9_9.aa
11.0-11.0.0-1.el9_9.aa
redhat/dotnet-apphost-pack<11.0-debuginfo-11.0.0-1.el9_9.aa
11.0-debuginfo-11.0.0-1.el9_9.aa
redhat/dotnet-host<11.0.0-1.el9_9.aa
11.0.0-1.el9_9.aa
redhat/dotnet-host-debuginfo<11.0.0-1.el9_9.aa
11.0.0-1.el9_9.aa
redhat/dotnet-hostfxr<11.0-11.0.0-1.el9_9.aa
11.0-11.0.0-1.el9_9.aa
redhat/dotnet-hostfxr<11.0-debuginfo-11.0.0-1.el9_9.aa
11.0-debuginfo-11.0.0-1.el9_9.aa
redhat/dotnet-runtime<11.0-11.0.0-1.el9_9.aa
11.0-11.0.0-1.el9_9.aa
redhat/dotnet-runtime<11.0-debuginfo-11.0.0-1.el9_9.aa
11.0-debuginfo-11.0.0-1.el9_9.aa
redhat/dotnet-runtime-dbg<11.0-11.0.0-1.el9_9.aa
11.0-11.0.0-1.el9_9.aa
redhat/dotnet-sdk<11.0-11.0.100-1.el9_9.aa
11.0-11.0.100-1.el9_9.aa
redhat/dotnet-sdk<11.0-debuginfo-11.0.100-1.el9_9.aa
11.0-debuginfo-11.0.100-1.el9_9.aa
redhat/dotnet-sdk-aot<11.0-11.0.100-1.el9_9.aa
11.0-11.0.100-1.el9_9.aa
redhat/dotnet-sdk-aot<11.0-debuginfo-11.0.100-1.el9_9.aa
11.0-debuginfo-11.0.100-1.el9_9.aa
redhat/dotnet-sdk-dbg<11.0-11.0.100-1.el9_9.aa
11.0-11.0.100-1.el9_9.aa
redhat/dotnet-targeting-pack<11.0-11.0.0-1.el9_9.aa
11.0-11.0.0-1.el9_9.aa
redhat/dotnet-templates<11.0-11.0.100-1.el9_9.aa
11.0-11.0.100-1.el9_9.aa
redhat/dotnet11.0-debuginfo<11.0.100-1.el9_9.aa
11.0.100-1.el9_9.aa
redhat/dotnet11.0-debugsource<11.0.100-1.el9_9.aa
11.0.100-1.el9_9.aa
redhat/dotnet-sdk<11.0-source-built-artifacts-11.0.100-1.el9_9
11.0-source-built-artifacts-11.0.100-1.el9_9
redhat/dotnet-sdk<11.0-source-built-artifacts-11.0.100-1.el9_9
11.0-source-built-artifacts-11.0.100-1.el9_9
redhat/dotnet-sdk<11.0-source-built-artifacts-11.0.100-1.el9_9.aa
11.0-source-built-artifacts-11.0.100-1.el9_9.aa
redhat/dotnet-sdk<11.0-source-built-artifacts-11.0.100-1.el9_9
11.0-source-built-artifacts-11.0.100-1.el9_9

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/dotnet11.0 to a version that resolves this vulnerability.

    Fixed in 11.0.100-1.el9_9
  2. Upgrade

    Upgrade redhat/aspnetcore-runtime to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.0-1.el9_9
  3. Upgrade

    Upgrade redhat/aspnetcore-runtime-dbg to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.0-1.el9_9
  4. Upgrade

    Upgrade redhat/aspnetcore-targeting-pack to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.0-1.el9_9
  5. Upgrade

    Upgrade redhat/dotnet-apphost-pack to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.0-1.el9_9
  6. Upgrade

    Upgrade redhat/dotnet-apphost-pack to a version that resolves this vulnerability.

    Fixed in 11.0-debuginfo-11.0.0-1.el9_9
  7. Upgrade

    Upgrade redhat/dotnet-host to a version that resolves this vulnerability.

    Fixed in 11.0.0-1.el9_9
  8. Upgrade

    Upgrade redhat/dotnet-host-debuginfo to a version that resolves this vulnerability.

    Fixed in 11.0.0-1.el9_9
  9. Upgrade

    Upgrade redhat/dotnet-hostfxr to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.0-1.el9_9
  10. Upgrade

    Upgrade redhat/dotnet-hostfxr to a version that resolves this vulnerability.

    Fixed in 11.0-debuginfo-11.0.0-1.el9_9
  11. Upgrade

    Upgrade redhat/dotnet-runtime to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.0-1.el9_9
  12. Upgrade

    Upgrade redhat/dotnet-runtime to a version that resolves this vulnerability.

    Fixed in 11.0-debuginfo-11.0.0-1.el9_9
  13. Upgrade

    Upgrade redhat/dotnet-runtime-dbg to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.0-1.el9_9
  14. Upgrade

    Upgrade redhat/dotnet-sdk to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.100-1.el9_9
  15. Upgrade

    Upgrade redhat/dotnet-sdk to a version that resolves this vulnerability.

    Fixed in 11.0-debuginfo-11.0.100-1.el9_9
  16. Upgrade

    Upgrade redhat/dotnet-sdk-aot to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.100-1.el9_9
  17. Upgrade

    Upgrade redhat/dotnet-sdk-aot to a version that resolves this vulnerability.

    Fixed in 11.0-debuginfo-11.0.100-1.el9_9
  18. Upgrade

    Upgrade redhat/dotnet-sdk-dbg to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.100-1.el9_9
  19. Upgrade

    Upgrade redhat/dotnet-targeting-pack to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.0-1.el9_9
  20. Upgrade

    Upgrade redhat/dotnet-templates to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.100-1.el9_9
  21. Upgrade

    Upgrade redhat/dotnet11.0-debuginfo to a version that resolves this vulnerability.

    Fixed in 11.0.100-1.el9_9
  22. Upgrade

    Upgrade redhat/dotnet11.0-debugsource to a version that resolves this vulnerability.

    Fixed in 11.0.100-1.el9_9
  23. Upgrade

    Upgrade redhat/aspnetcore-runtime to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.0-1.el9_9.aa
  24. Upgrade

    Upgrade redhat/aspnetcore-runtime-dbg to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.0-1.el9_9.aa
  25. Upgrade

    Upgrade redhat/aspnetcore-targeting-pack to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.0-1.el9_9.aa
  26. Upgrade

    Upgrade redhat/dotnet-apphost-pack to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.0-1.el9_9.aa
  27. Upgrade

    Upgrade redhat/dotnet-apphost-pack to a version that resolves this vulnerability.

    Fixed in 11.0-debuginfo-11.0.0-1.el9_9.aa
  28. Upgrade

    Upgrade redhat/dotnet-host to a version that resolves this vulnerability.

    Fixed in 11.0.0-1.el9_9.aa
  29. Upgrade

    Upgrade redhat/dotnet-host-debuginfo to a version that resolves this vulnerability.

    Fixed in 11.0.0-1.el9_9.aa
  30. Upgrade

    Upgrade redhat/dotnet-hostfxr to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.0-1.el9_9.aa
  31. Upgrade

    Upgrade redhat/dotnet-hostfxr to a version that resolves this vulnerability.

    Fixed in 11.0-debuginfo-11.0.0-1.el9_9.aa
  32. Upgrade

    Upgrade redhat/dotnet-runtime to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.0-1.el9_9.aa
  33. Upgrade

    Upgrade redhat/dotnet-runtime to a version that resolves this vulnerability.

    Fixed in 11.0-debuginfo-11.0.0-1.el9_9.aa
  34. Upgrade

    Upgrade redhat/dotnet-runtime-dbg to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.0-1.el9_9.aa
  35. Upgrade

    Upgrade redhat/dotnet-sdk to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.100-1.el9_9.aa
  36. Upgrade

    Upgrade redhat/dotnet-sdk to a version that resolves this vulnerability.

    Fixed in 11.0-debuginfo-11.0.100-1.el9_9.aa
  37. Upgrade

    Upgrade redhat/dotnet-sdk-aot to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.100-1.el9_9.aa
  38. Upgrade

    Upgrade redhat/dotnet-sdk-aot to a version that resolves this vulnerability.

    Fixed in 11.0-debuginfo-11.0.100-1.el9_9.aa
  39. Upgrade

    Upgrade redhat/dotnet-sdk-dbg to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.100-1.el9_9.aa
  40. Upgrade

    Upgrade redhat/dotnet-targeting-pack to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.0-1.el9_9.aa
  41. Upgrade

    Upgrade redhat/dotnet-templates to a version that resolves this vulnerability.

    Fixed in 11.0-11.0.100-1.el9_9.aa
  42. Upgrade

    Upgrade redhat/dotnet11.0-debuginfo to a version that resolves this vulnerability.

    Fixed in 11.0.100-1.el9_9.aa
  43. Upgrade

    Upgrade redhat/dotnet11.0-debugsource to a version that resolves this vulnerability.

    Fixed in 11.0.100-1.el9_9.aa
  44. Upgrade

    Upgrade redhat/dotnet-sdk to a version that resolves this vulnerability.

    Fixed in 11.0-source-built-artifacts-11.0.100-1.el9_9
  45. Upgrade

    Upgrade redhat/dotnet-sdk to a version that resolves this vulnerability.

    Fixed in 11.0-source-built-artifacts-11.0.100-1.el9_9.aa
  46. Upgrade

    Upgrade .NET 11.0 SDK to a version that resolves this vulnerability.

    Fixed in 11.0.100
  47. Upgrade

    Upgrade .NET 11.0 Runtime to a version that resolves this vulnerability.

    Fixed in 11.0.0

Event History

Nov 11, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software

Frequently Asked Questions

1

Which installed components should be reviewed when assessing exposure to this update?

Review deployments containing redhat/dotnet-sdk, redhat/dotnet-runtime, redhat/dotnet-host, redhat/dotnet-hostfxr, redhat/dotnet-apphost-pack, or ASP.NET Core runtime and targeting-pack components. The advisory also lists the ASP.NET Core debug runtime package.

2

Are all of the listed security fixes limited to .NET 11.0?

No. Several listed fixes affect .NET 8.0 through 11.0, including CVE-2026-109476, CVE-2026-105544, CVE-2026-109475, CVE-2026-114146, CVE-2026-114147, and CVE-2026-114149. CVE-2026-109481 is listed specifically for .NET 11.0.

3

What updated SDK and runtime versions are identified by this advisory?

The advisory identifies SDK version 11.0.100 and runtime version 11.0.0. It does not provide package release identifiers or temporary mitigations for systems that cannot yet be updated.

Company

Resources

Contact

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