RHSA-2026:55857: Important: .NET 10.0 security, bug fix, and enhancement update

Published Aug 17, 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: 10.0.111Runtime version: 10.0.11Security Fix(es): .NET: .NET Core: .NET Security Feature Bypass Vulnerability (CVE-2026-62899) .NET: .NET Information Disclosure Vulnerability (CVE-2026-62900) .NET: .NET Denial of Service Vulnerability (CVE-2026-62901) .NET: .NET Elevation of Privilege Vulnerability (CVE-2026-62909) Bug Fix(es) and Enhancement(s): Update .NET 10.0 to SDK 10.0.111 and Runtime 10.0.11 [rhel-9.8.z] (JIRA:RHEL-235481) 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/dotnet10.0<10.0.111-1.el9_8
10.0.111-1.el9_8
redhat/aspnetcore-runtime<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/aspnetcore-runtime-dbg<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/aspnetcore-targeting-pack<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-apphost-pack<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-apphost-pack<10.0-debuginfo-10.0.11-1.el9_8
10.0-debuginfo-10.0.11-1.el9_8
redhat/dotnet-host<10.0.11-1.el9_8
10.0.11-1.el9_8
redhat/dotnet-host-debuginfo<10.0.11-1.el9_8
10.0.11-1.el9_8
redhat/dotnet-hostfxr<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-hostfxr<10.0-debuginfo-10.0.11-1.el9_8
10.0-debuginfo-10.0.11-1.el9_8
redhat/dotnet-runtime<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-runtime<10.0-debuginfo-10.0.11-1.el9_8
10.0-debuginfo-10.0.11-1.el9_8
redhat/dotnet-runtime-dbg<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-sdk<10.0-10.0.111-1.el9_8
10.0-10.0.111-1.el9_8
redhat/dotnet-sdk<10.0-debuginfo-10.0.111-1.el9_8
10.0-debuginfo-10.0.111-1.el9_8
redhat/dotnet-sdk-aot<10.0-10.0.111-1.el9_8
10.0-10.0.111-1.el9_8
redhat/dotnet-sdk-aot<10.0-debuginfo-10.0.111-1.el9_8
10.0-debuginfo-10.0.111-1.el9_8
redhat/dotnet-sdk-dbg<10.0-10.0.111-1.el9_8
10.0-10.0.111-1.el9_8
redhat/dotnet-targeting-pack<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-templates<10.0-10.0.111-1.el9_8
10.0-10.0.111-1.el9_8
redhat/dotnet10.0-debuginfo<10.0.111-1.el9_8
10.0.111-1.el9_8
redhat/dotnet10.0-debugsource<10.0.111-1.el9_8
10.0.111-1.el9_8
redhat/aspnetcore-runtime<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/aspnetcore-runtime-dbg<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/aspnetcore-targeting-pack<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-apphost-pack<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-apphost-pack<10.0-debuginfo-10.0.11-1.el9_8
10.0-debuginfo-10.0.11-1.el9_8
redhat/dotnet-host<10.0.11-1.el9_8
10.0.11-1.el9_8
redhat/dotnet-host-debuginfo<10.0.11-1.el9_8
10.0.11-1.el9_8
redhat/dotnet-hostfxr<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-hostfxr<10.0-debuginfo-10.0.11-1.el9_8
10.0-debuginfo-10.0.11-1.el9_8
redhat/dotnet-runtime<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-runtime<10.0-debuginfo-10.0.11-1.el9_8
10.0-debuginfo-10.0.11-1.el9_8
redhat/dotnet-runtime-dbg<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-sdk<10.0-10.0.111-1.el9_8
10.0-10.0.111-1.el9_8
redhat/dotnet-sdk<10.0-debuginfo-10.0.111-1.el9_8
10.0-debuginfo-10.0.111-1.el9_8
redhat/dotnet-sdk-dbg<10.0-10.0.111-1.el9_8
10.0-10.0.111-1.el9_8
redhat/dotnet-targeting-pack<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-templates<10.0-10.0.111-1.el9_8
10.0-10.0.111-1.el9_8
redhat/dotnet10.0-debuginfo<10.0.111-1.el9_8
10.0.111-1.el9_8
redhat/dotnet10.0-debugsource<10.0.111-1.el9_8
10.0.111-1.el9_8
redhat/aspnetcore-runtime<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/aspnetcore-runtime-dbg<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/aspnetcore-targeting-pack<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-apphost-pack<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-apphost-pack<10.0-debuginfo-10.0.11-1.el9_8
10.0-debuginfo-10.0.11-1.el9_8
redhat/dotnet-host<10.0.11-1.el9_8
10.0.11-1.el9_8
redhat/dotnet-host-debuginfo<10.0.11-1.el9_8
10.0.11-1.el9_8
redhat/dotnet-hostfxr<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-hostfxr<10.0-debuginfo-10.0.11-1.el9_8
10.0-debuginfo-10.0.11-1.el9_8
redhat/dotnet-runtime<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-runtime<10.0-debuginfo-10.0.11-1.el9_8
10.0-debuginfo-10.0.11-1.el9_8
redhat/dotnet-runtime-dbg<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-sdk<10.0-10.0.111-1.el9_8
10.0-10.0.111-1.el9_8
redhat/dotnet-sdk<10.0-debuginfo-10.0.111-1.el9_8
10.0-debuginfo-10.0.111-1.el9_8
redhat/dotnet-sdk-dbg<10.0-10.0.111-1.el9_8
10.0-10.0.111-1.el9_8
redhat/dotnet-targeting-pack<10.0-10.0.11-1.el9_8
10.0-10.0.11-1.el9_8
redhat/dotnet-templates<10.0-10.0.111-1.el9_8
10.0-10.0.111-1.el9_8
redhat/dotnet10.0-debuginfo<10.0.111-1.el9_8
10.0.111-1.el9_8
redhat/dotnet10.0-debugsource<10.0.111-1.el9_8
10.0.111-1.el9_8
redhat/aspnetcore-runtime<10.0-10.0.11-1.el9_8.aa
10.0-10.0.11-1.el9_8.aa
redhat/aspnetcore-runtime-dbg<10.0-10.0.11-1.el9_8.aa
10.0-10.0.11-1.el9_8.aa
redhat/aspnetcore-targeting-pack<10.0-10.0.11-1.el9_8.aa
10.0-10.0.11-1.el9_8.aa
redhat/dotnet-apphost-pack<10.0-10.0.11-1.el9_8.aa
10.0-10.0.11-1.el9_8.aa
redhat/dotnet-apphost-pack<10.0-debuginfo-10.0.11-1.el9_8.aa
10.0-debuginfo-10.0.11-1.el9_8.aa
redhat/dotnet-host<10.0.11-1.el9_8.aa
10.0.11-1.el9_8.aa
redhat/dotnet-host-debuginfo<10.0.11-1.el9_8.aa
10.0.11-1.el9_8.aa
redhat/dotnet-hostfxr<10.0-10.0.11-1.el9_8.aa
10.0-10.0.11-1.el9_8.aa
redhat/dotnet-hostfxr<10.0-debuginfo-10.0.11-1.el9_8.aa
10.0-debuginfo-10.0.11-1.el9_8.aa
redhat/dotnet-runtime<10.0-10.0.11-1.el9_8.aa
10.0-10.0.11-1.el9_8.aa
redhat/dotnet-runtime<10.0-debuginfo-10.0.11-1.el9_8.aa
10.0-debuginfo-10.0.11-1.el9_8.aa
redhat/dotnet-runtime-dbg<10.0-10.0.11-1.el9_8.aa
10.0-10.0.11-1.el9_8.aa
redhat/dotnet-sdk<10.0-10.0.111-1.el9_8.aa
10.0-10.0.111-1.el9_8.aa
redhat/dotnet-sdk<10.0-debuginfo-10.0.111-1.el9_8.aa
10.0-debuginfo-10.0.111-1.el9_8.aa
redhat/dotnet-sdk-aot<10.0-10.0.111-1.el9_8.aa
10.0-10.0.111-1.el9_8.aa
redhat/dotnet-sdk-aot<10.0-debuginfo-10.0.111-1.el9_8.aa
10.0-debuginfo-10.0.111-1.el9_8.aa
redhat/dotnet-sdk-dbg<10.0-10.0.111-1.el9_8.aa
10.0-10.0.111-1.el9_8.aa
redhat/dotnet-targeting-pack<10.0-10.0.11-1.el9_8.aa
10.0-10.0.11-1.el9_8.aa
redhat/dotnet-templates<10.0-10.0.111-1.el9_8.aa
10.0-10.0.111-1.el9_8.aa
redhat/dotnet10.0-debuginfo<10.0.111-1.el9_8.aa
10.0.111-1.el9_8.aa
redhat/dotnet10.0-debugsource<10.0.111-1.el9_8.aa
10.0.111-1.el9_8.aa
redhat/dotnet-sdk<10.0-source-built-artifacts-10.0.111-1.el9_8
10.0-source-built-artifacts-10.0.111-1.el9_8
redhat/dotnet-sdk<10.0-source-built-artifacts-10.0.111-1.el9_8
10.0-source-built-artifacts-10.0.111-1.el9_8
redhat/dotnet-sdk<10.0-source-built-artifacts-10.0.111-1.el9_8.aa
10.0-source-built-artifacts-10.0.111-1.el9_8.aa
redhat/dotnet-sdk<10.0-source-built-artifacts-10.0.111-1.el9_8
10.0-source-built-artifacts-10.0.111-1.el9_8

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/dotnet10.0 to a version that resolves this vulnerability.

    Fixed in 10.0.111-1.el9_8
  2. Upgrade

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

    Fixed in 10.0-10.0.11-1.el9_8
  3. Upgrade

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

    Fixed in 10.0-10.0.11-1.el9_8
  4. Upgrade

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

    Fixed in 10.0-10.0.11-1.el9_8
  5. Upgrade

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

    Fixed in 10.0-10.0.11-1.el9_8
  6. Upgrade

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

    Fixed in 10.0-debuginfo-10.0.11-1.el9_8
  7. Upgrade

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

    Fixed in 10.0.11-1.el9_8
  8. Upgrade

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

    Fixed in 10.0.11-1.el9_8
  9. Upgrade

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

    Fixed in 10.0-10.0.11-1.el9_8
  10. Upgrade

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

    Fixed in 10.0-debuginfo-10.0.11-1.el9_8
  11. Upgrade

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

    Fixed in 10.0-10.0.11-1.el9_8
  12. Upgrade

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

    Fixed in 10.0-debuginfo-10.0.11-1.el9_8
  13. Upgrade

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

    Fixed in 10.0-10.0.11-1.el9_8
  14. Upgrade

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

    Fixed in 10.0-10.0.111-1.el9_8
  15. Upgrade

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

    Fixed in 10.0-debuginfo-10.0.111-1.el9_8
  16. Upgrade

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

    Fixed in 10.0-10.0.111-1.el9_8
  17. Upgrade

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

    Fixed in 10.0-debuginfo-10.0.111-1.el9_8
  18. Upgrade

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

    Fixed in 10.0-10.0.111-1.el9_8
  19. Upgrade

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

    Fixed in 10.0-10.0.11-1.el9_8
  20. Upgrade

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

    Fixed in 10.0-10.0.111-1.el9_8
  21. Upgrade

    Upgrade redhat/dotnet10.0-debuginfo to a version that resolves this vulnerability.

    Fixed in 10.0.111-1.el9_8
  22. Upgrade

    Upgrade redhat/dotnet10.0-debugsource to a version that resolves this vulnerability.

    Fixed in 10.0.111-1.el9_8
  23. Upgrade

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

    Fixed in 10.0-10.0.11-1.el9_8.aa
  24. Upgrade

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

    Fixed in 10.0-10.0.11-1.el9_8.aa
  25. Upgrade

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

    Fixed in 10.0-10.0.11-1.el9_8.aa
  26. Upgrade

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

    Fixed in 10.0-10.0.11-1.el9_8.aa
  27. Upgrade

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

    Fixed in 10.0-debuginfo-10.0.11-1.el9_8.aa
  28. Upgrade

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

    Fixed in 10.0.11-1.el9_8.aa
  29. Upgrade

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

    Fixed in 10.0.11-1.el9_8.aa
  30. Upgrade

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

    Fixed in 10.0-10.0.11-1.el9_8.aa
  31. Upgrade

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

    Fixed in 10.0-debuginfo-10.0.11-1.el9_8.aa
  32. Upgrade

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

    Fixed in 10.0-10.0.11-1.el9_8.aa
  33. Upgrade

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

    Fixed in 10.0-debuginfo-10.0.11-1.el9_8.aa
  34. Upgrade

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

    Fixed in 10.0-10.0.11-1.el9_8.aa
  35. Upgrade

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

    Fixed in 10.0-10.0.111-1.el9_8.aa
  36. Upgrade

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

    Fixed in 10.0-debuginfo-10.0.111-1.el9_8.aa
  37. Upgrade

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

    Fixed in 10.0-10.0.111-1.el9_8.aa
  38. Upgrade

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

    Fixed in 10.0-debuginfo-10.0.111-1.el9_8.aa
  39. Upgrade

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

    Fixed in 10.0-10.0.111-1.el9_8.aa
  40. Upgrade

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

    Fixed in 10.0-10.0.11-1.el9_8.aa
  41. Upgrade

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

    Fixed in 10.0-10.0.111-1.el9_8.aa
  42. Upgrade

    Upgrade redhat/dotnet10.0-debuginfo to a version that resolves this vulnerability.

    Fixed in 10.0.111-1.el9_8.aa
  43. Upgrade

    Upgrade redhat/dotnet10.0-debugsource to a version that resolves this vulnerability.

    Fixed in 10.0.111-1.el9_8.aa
  44. Upgrade

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

    Fixed in 10.0-source-built-artifacts-10.0.111-1.el9_8
  45. Upgrade

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

    Fixed in 10.0-source-built-artifacts-10.0.111-1.el9_8.aa
  46. Upgrade

    Upgrade .NET 10.0 SDK to a version that resolves this vulnerability.

    Fixed in 10.0.111Patch JIRA:RHEL-235481
  47. Upgrade

    Upgrade .NET 10.0 Runtime to a version that resolves this vulnerability.

    Fixed in 10.0.11Patch JIRA:RHEL-235481

Event History

Aug 17, 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 are in scope for this advisory?

The update applies to Red Hat .NET components, including the SDK, runtime, host, hostfxr, apphost pack, ASP.NET Core runtime, ASP.NET Core targeting pack, and ASP.NET Core runtime debug package. Systems using these components should assess the update.

2

What updated versions contain the fixes?

The advisory updates .NET 10.0 to SDK version 10.0.111 and Runtime version 10.0.11 for rhel-9.8.z. It addresses security fixes for feature bypass, information disclosure, denial of service, and elevation of privilege vulnerabilities.

Company

Resources

Contact

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