RLSA-2026:99052: Important: .NET 8.0 security, bug fix, and enhancement update

Published Nov 13, 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: 8.0.134 Runtime version: 8.0.34

Security Fix(es):

dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-109478)

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)

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)

Bug Fix(es) and Enhancement(s):

Update .NET 8.0 to SDK 8.0.134 and Runtime 8.0.34 (JIRA:Rocky Linux-302533)

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

18 affected componentsFixes available
rocky-linux/aspnetcore-runtime-8.0<0:8.0.34-1.el8_10
0:8.0.34-1.el8_10
rocky-linux/aspnetcore-runtime-dbg-8.0<0:8.0.34-1.el8_10
0:8.0.34-1.el8_10
rocky-linux/aspnetcore-targeting-pack-8.0<0:8.0.34-1.el8_10
0:8.0.34-1.el8_10
rocky-linux/dotnet8.0-debuginfo<0:8.0.134-1.el8_10
0:8.0.134-1.el8_10
rocky-linux/dotnet8.0-debugsource<0:8.0.134-1.el8_10
0:8.0.134-1.el8_10
rocky-linux/dotnet-apphost-pack-8.0<0:8.0.34-1.el8_10
0:8.0.34-1.el8_10
rocky-linux/dotnet-apphost-pack-8.0-debuginfo<0:8.0.34-1.el8_10
0:8.0.34-1.el8_10
rocky-linux/dotnet-hostfxr-8.0<0:8.0.34-1.el8_10
0:8.0.34-1.el8_10
rocky-linux/dotnet-hostfxr-8.0-debuginfo<0:8.0.34-1.el8_10
0:8.0.34-1.el8_10
rocky-linux/dotnet-runtime-8.0<0:8.0.34-1.el8_10
0:8.0.34-1.el8_10
rocky-linux/dotnet-runtime-8.0-debuginfo<0:8.0.34-1.el8_10
0:8.0.34-1.el8_10
rocky-linux/dotnet-runtime-dbg-8.0<0:8.0.34-1.el8_10
0:8.0.34-1.el8_10
rocky-linux/dotnet-sdk-8.0<0:8.0.134-1.el8_10
0:8.0.134-1.el8_10
rocky-linux/dotnet-sdk-8.0-debuginfo<0:8.0.134-1.el8_10
0:8.0.134-1.el8_10
rocky-linux/dotnet-sdk-8.0-source-built-artifacts<0:8.0.134-1.el8_10
0:8.0.134-1.el8_10
rocky-linux/dotnet-sdk-dbg-8.0<0:8.0.134-1.el8_10
0:8.0.134-1.el8_10
rocky-linux/dotnet-targeting-pack-8.0<0:8.0.34-1.el8_10
0:8.0.34-1.el8_10
rocky-linux/dotnet-templates-8.0<0:8.0.134-1.el8_10
0:8.0.134-1.el8_10

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade rocky-linux/aspnetcore-runtime-8.0 to a version that resolves this vulnerability.

    Fixed in 0:8.0.34-1.el8_10
  2. Upgrade

    Upgrade rocky-linux/aspnetcore-runtime-dbg-8.0 to a version that resolves this vulnerability.

    Fixed in 0:8.0.34-1.el8_10
  3. Upgrade

    Upgrade rocky-linux/aspnetcore-targeting-pack-8.0 to a version that resolves this vulnerability.

    Fixed in 0:8.0.34-1.el8_10
  4. Upgrade

    Upgrade rocky-linux/dotnet8.0-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:8.0.134-1.el8_10
  5. Upgrade

    Upgrade rocky-linux/dotnet8.0-debugsource to a version that resolves this vulnerability.

    Fixed in 0:8.0.134-1.el8_10
  6. Upgrade

    Upgrade rocky-linux/dotnet-apphost-pack-8.0 to a version that resolves this vulnerability.

    Fixed in 0:8.0.34-1.el8_10
  7. Upgrade

    Upgrade rocky-linux/dotnet-apphost-pack-8.0-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:8.0.34-1.el8_10
  8. Upgrade

    Upgrade rocky-linux/dotnet-hostfxr-8.0 to a version that resolves this vulnerability.

    Fixed in 0:8.0.34-1.el8_10
  9. Upgrade

    Upgrade rocky-linux/dotnet-hostfxr-8.0-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:8.0.34-1.el8_10
  10. Upgrade

    Upgrade rocky-linux/dotnet-runtime-8.0 to a version that resolves this vulnerability.

    Fixed in 0:8.0.34-1.el8_10
  11. Upgrade

    Upgrade rocky-linux/dotnet-runtime-8.0-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:8.0.34-1.el8_10
  12. Upgrade

    Upgrade rocky-linux/dotnet-runtime-dbg-8.0 to a version that resolves this vulnerability.

    Fixed in 0:8.0.34-1.el8_10
  13. Upgrade

    Upgrade rocky-linux/dotnet-sdk-8.0 to a version that resolves this vulnerability.

    Fixed in 0:8.0.134-1.el8_10
  14. Upgrade

    Upgrade rocky-linux/dotnet-sdk-8.0-debuginfo to a version that resolves this vulnerability.

    Fixed in 0:8.0.134-1.el8_10
  15. Upgrade

    Upgrade rocky-linux/dotnet-sdk-8.0-source-built-artifacts to a version that resolves this vulnerability.

    Fixed in 0:8.0.134-1.el8_10
  16. Upgrade

    Upgrade rocky-linux/dotnet-sdk-dbg-8.0 to a version that resolves this vulnerability.

    Fixed in 0:8.0.134-1.el8_10
  17. Upgrade

    Upgrade rocky-linux/dotnet-targeting-pack-8.0 to a version that resolves this vulnerability.

    Fixed in 0:8.0.34-1.el8_10
  18. Upgrade

    Upgrade rocky-linux/dotnet-templates-8.0 to a version that resolves this vulnerability.

    Fixed in 0:8.0.134-1.el8_10
  19. Upgrade

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

    Fixed in 8.0.134
  20. Upgrade

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

    Fixed in 8.0.34

Event History

Nov 13, 2026
Advisory Published
via OSV·06:01 AM
Data Sourced
via OSV·06:01 AM
DescriptionSeverityAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What attacker access and interaction are indicated by the advisory's severity vector?

The vector indicates network-based exploitation with low attack complexity, requiring low privileges and user interaction. It also indicates scope change and high potential impact to confidentiality, integrity, and availability.

2

Which .NET versions are identified as affected by the listed security fixes?

The advisory specifically provides .NET 8.0 SDK version 8.0.134 and runtime version 8.0.34. Several listed fixes also affect .NET 9.0, 10.0, and 11.0, while one ASP.NET Core elevation-of-privilege fix additionally lists the unversioned dotnet package.

3

Which vulnerability types are addressed for .NET 8.0?

The listed fixes include ASP.NET Core denial of service, ASP.NET Core information disclosure, .NET elevation of privilege, .NET denial of service, and ASP.NET Core elevation of privilege vulnerabilities. The advisory identifies the related CVEs as CVE-2026-109478, CVE-2026-109476, CVE-2026-105544, CVE-2026-109475, CVE-2026-114146, CVE-2026-114147, and CVE-2026-114149.

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