RHSA-2026:41899HighCVSS 8.8

Red Hat Security Advisory: .NET 9.0 security, bug fix, and enhancement update

Published
July 20, 2026
Last Modified
August 18, 2026

🔗 CVE IDs covered (17)

CVE-2026-47302 →CVE-2026-50525 →CVE-2026-50649 →CVE-2026-47304 →CVE-2026-50528 →CVE-2026-50651 →CVE-2026-57108 →CVE-2026-47303 →CVE-2026-50526 →CVE-2026-50527 →CVE-2026-50650 →CVE-2026-56170 →CVE-2026-50524 →CVE-2026-50646 →CVE-2026-50648 →CVE-2026-50659 →CVE-2026-47300 →

📋 Description

CVE-2026-47300 — ASP.NET Core: ASP.NET Core: Privilege Escalation via Incorrect Authentication Algorithm CVE-2026-47302 — dotnet: .NET: Denial of Service vulnerability due to uncontrolled resource allocation CVE-2026-47303 — ASP.NET Core: ASP.NET Core: Privilege Elevation via Authentication Bypass CVE-2026-47304 — dotnet: .NET Security Feature Bypass Vulnerability CVE-2026-50524 — dotnet: .NET Framework: Denial of Service via improper input validation CVE-2026-50525 — dotnet: .NET: Denial of Service due to uncontrolled resource allocation CVE-2026-50526 — dotnet: .NET: Local tampering via improper link resolution CVE-2026-50527 — dotnet: .NET Framework: Denial of Service via network-based buffer overflow CVE-2026-50528 — dotnet: .NET: Security feature bypass due to incorrect authorization CVE-2026-50646 — dotnet: .NET Framework: Local Code Execution via Protection Mechanism Failure CVE-2026-50648 — dotnet: .NET Framework: Remote Denial of Service due to uncontrolled resource allocation CVE-2026-50649 — dotnet: .NET: Local code execution via deserialization of untrusted data CVE-2026-50650 — dotnet: .NET Framework: Privilege escalation via code injection CVE-2026-50651 — dotnet: SocketsHttpHandler Http2Connection - HTTP/2 SETTINGS/PING ACK flood causing OOM CVE-2026-50659 — .NET: .NET: Network Spoofing Vulnerability CVE-2026-56170 — ASP.NET Core: ASP.NET Core: Denial of Service via uncontrolled resource allocation CVE-2026-57108 — dotnet: .NET Core: Denial of Service via type confusion

🎯 Affected products109

  • Red Hat Enterprise Linux AppStream (v. 8)
  • Red Hat Enterprise Linux CRB (v. 8)
  • aspnetcore-runtime-9.0-0:9.0.18-1.el8_10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • aspnetcore-runtime-9.0-0:9.0.18-1.el8_10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • aspnetcore-runtime-9.0-0:9.0.18-1.el8_10.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • aspnetcore-runtime-9.0-0:9.0.18-1.el8_10.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • aspnetcore-runtime-dbg-9.0-0:9.0.18-1.el8_10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • aspnetcore-runtime-dbg-9.0-0:9.0.18-1.el8_10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • aspnetcore-runtime-dbg-9.0-0:9.0.18-1.el8_10.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • aspnetcore-runtime-dbg-9.0-0:9.0.18-1.el8_10.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • aspnetcore-targeting-pack-9.0-0:9.0.18-1.el8_10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • aspnetcore-targeting-pack-9.0-0:9.0.18-1.el8_10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • aspnetcore-targeting-pack-9.0-0:9.0.18-1.el8_10.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • aspnetcore-targeting-pack-9.0-0:9.0.18-1.el8_10.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • dotnet-apphost-pack-9.0-0:9.0.18-1.el8_10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • dotnet-apphost-pack-9.0-0:9.0.18-1.el8_10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • dotnet-apphost-pack-9.0-0:9.0.18-1.el8_10.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • dotnet-apphost-pack-9.0-0:9.0.18-1.el8_10.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • dotnet-apphost-pack-9.0-debuginfo-0:9.0.18-1.el8_10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • dotnet-apphost-pack-9.0-debuginfo-0:9.0.18-1.el8_10.aarch64 as a component of Red Hat Enterprise Linux CRB (v. 8)
  • dotnet-apphost-pack-9.0-debuginfo-0:9.0.18-1.el8_10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • dotnet-apphost-pack-9.0-debuginfo-0:9.0.18-1.el8_10.ppc64le as a component of Red Hat Enterprise Linux CRB (v. 8)
  • dotnet-apphost-pack-9.0-debuginfo-0:9.0.18-1.el8_10.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • dotnet-apphost-pack-9.0-debuginfo-0:9.0.18-1.el8_10.s390x as a component of Red Hat Enterprise Linux CRB (v. 8)
  • dotnet-apphost-pack-9.0-debuginfo-0:9.0.18-1.el8_10.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • dotnet-apphost-pack-9.0-debuginfo-0:9.0.18-1.el8_10.x86_64 as a component of Red Hat Enterprise Linux CRB (v. 8)
  • dotnet-hostfxr-9.0-0:9.0.18-1.el8_10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • dotnet-hostfxr-9.0-0:9.0.18-1.el8_10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • dotnet-hostfxr-9.0-0:9.0.18-1.el8_10.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • dotnet-hostfxr-9.0-0:9.0.18-1.el8_10.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • +79 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

🔗 References (20)