CVE-2026-96222
Fixed in a distro release EPSS <1%CVSS 7.4
Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.
Products: Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2, Microsoft .NET Framework 3.5 AND 4.7.2, Microsoft .NET Framework 3.5 AND 4.8, Microsoft .NET Framework 3.5 AND 4.8.1, Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2, Microsoft .NET Framework 4.8, Microsoft .NET Framework 4.8.1, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft System.Security.Cryptography.Xml, Microsoft Windows 10 Version 1607, Microsoft Windows 10 Version 1809, Microsoft Windows Server 2012 R2, Microsoft Windows Server 2012 R2 (Server Core installation), Microsoft Windows Server 2016, Microsoft Windows Server 2016 (Server Core installation), Microsoft Windows Server 2019, Microsoft Windows Server 2019 (Server Core installation), Microsoft Windows Server 2022, Microsoft Windows Server 2025, Microsoft Windows Server 2025 (Server Core installation)
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| NuGet | System.Security.Cryptography.Xml | 8.0.5 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 10 | aspnetcore-runtime-8.0 | 8.0.32-1.el10_2 |
| AlmaLinux 10 | aspnetcore-runtime-dbg-8.0 | 8.0.32-1.el10_2 |
| AlmaLinux 10 | aspnetcore-targeting-pack-8.0 | 8.0.32-1.el10_2 |
| AlmaLinux 10 | dotnet-apphost-pack-8.0 | 8.0.32-1.el10_2 |
| AlmaLinux 10 | dotnet-hostfxr-8.0 | 8.0.32-1.el10_2 |
| AlmaLinux 10 | dotnet-runtime-8.0 | 8.0.32-1.el10_2 |
| AlmaLinux 10 | dotnet-runtime-dbg-8.0 | 8.0.32-1.el10_2 |
| AlmaLinux 10 | dotnet-sdk-8.0 | 8.0.132-1.el10_2 |
| AlmaLinux 10 | dotnet-sdk-8.0-source-built-artifacts | 8.0.132-1.el10_2 |
| AlmaLinux 10 | dotnet-sdk-dbg-8.0 | 8.0.132-1.el10_2 |
| AlmaLinux 10 | dotnet-targeting-pack-8.0 | 8.0.32-1.el10_2 |
| AlmaLinux 10 | dotnet-templates-8.0 | 8.0.132-1.el10_2 |
| AlmaLinux 8 | aspnetcore-runtime-8.0 | 8.0.32-2.el8_10 |
| AlmaLinux 8 | aspnetcore-runtime-dbg-8.0 | 8.0.32-2.el8_10 |
| AlmaLinux 8 | aspnetcore-targeting-pack-8.0 | 8.0.32-2.el8_10 |
| AlmaLinux 8 | dotnet-apphost-pack-8.0 | 8.0.32-2.el8_10 |
| AlmaLinux 8 | dotnet-hostfxr-8.0 | 8.0.32-2.el8_10 |
| AlmaLinux 8 | dotnet-runtime-8.0 | 8.0.32-2.el8_10 |
| AlmaLinux 8 | dotnet-runtime-dbg-8.0 | 8.0.32-2.el8_10 |
| AlmaLinux 8 | dotnet-sdk-8.0 | 8.0.132-2.el8_10 |
| AlmaLinux 8 | dotnet-sdk-8.0-source-built-artifacts | 8.0.132-2.el8_10 |
| AlmaLinux 8 | dotnet-sdk-dbg-8.0 | 8.0.132-2.el8_10 |
| AlmaLinux 8 | dotnet-targeting-pack-8.0 | 8.0.32-2.el8_10 |
| AlmaLinux 8 | dotnet-templates-8.0 | 8.0.132-2.el8_10 |
| AlmaLinux 9 | aspnetcore-runtime-8.0 | 8.0.32-1.el9_8 |
| AlmaLinux 9 | aspnetcore-runtime-dbg-8.0 | 8.0.32-1.el9_8 |
| AlmaLinux 9 | aspnetcore-targeting-pack-8.0 | 8.0.32-1.el9_8 |
| AlmaLinux 9 | dotnet-apphost-pack-8.0 | 8.0.32-1.el9_8 |
| AlmaLinux 9 | dotnet-hostfxr-8.0 | 8.0.32-1.el9_8 |
| AlmaLinux 9 | dotnet-runtime-8.0 | 8.0.32-1.el9_8 |
| AlmaLinux 9 | dotnet-runtime-dbg-8.0 | 8.0.32-1.el9_8 |
| AlmaLinux 9 | dotnet-sdk-8.0 | 8.0.132-1.el9_8 |
| AlmaLinux 9 | dotnet-sdk-8.0-source-built-artifacts | 8.0.132-1.el9_8 |
| AlmaLinux 9 | dotnet-sdk-dbg-8.0 | 8.0.132-1.el9_8 |
| AlmaLinux 9 | dotnet-targeting-pack-8.0 | 8.0.32-1.el9_8 |
| AlmaLinux 9 | dotnet-templates-8.0 | 8.0.132-1.el9_8 |
| Chainguard | dotnet-8-sdk | 8.0.132-r0 |
| Chainguard | dotnet-bootstrap-8 | no fix |
| Red Hat hummingbird 1 | aspnetcore-runtime-8.0 | 0:8.0.32-0.1.hum1 |
| Red Hat hummingbird 1 | aspnetcore-runtime-dbg-8.0 | 0:8.0.32-0.1.hum1 |
| Red Hat hummingbird 1 | aspnetcore-targeting-pack-8.0 | 0:8.0.32-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-apphost-pack-8.0 | 0:8.0.32-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-hostfxr-8.0 | 0:8.0.32-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-runtime-8.0 | 0:8.0.32-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-runtime-dbg-8.0 | 0:8.0.32-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-8.0 | 0:8.0.132-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-8.0-source-built-artifacts | 0:8.0.132-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-sdk-dbg-8.0 | 0:8.0.132-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-targeting-pack-8.0 | 0:8.0.32-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet-templates-8.0 | 0:8.0.132-0.1.hum1 |
| Red Hat hummingbird 1 | dotnet8.0 | 0:8.0.132-0.1.hum1 |
| Rocky Linux 10 | dotnet8.0 | 0:8.0.132-1.el10_2 |
| Rocky Linux 8 | dotnet8.0 | 0:8.0.132-2.el8_10 |
| Rocky Linux 9 | dotnet8.0 | 0:8.0.132-1.el9_8 |
| Ubuntu 22.04 LTS | dotnet6 | no fix |
| Ubuntu 22.04 LTS | dotnet7 | no fix |
| Ubuntu 22.04 LTS | dotnet8 | 8.0.132-8.0.32-0ubuntu1~22.04.1 |
| Ubuntu 24.04 LTS | dotnet10 | 10.0.113-10.0.13-0ubuntu1~24.04.1 |
| Ubuntu 24.04 LTS | dotnet8 | 8.0.132-8.0.32-0ubuntu1~24.04.1 |
| Ubuntu 26.04 LTS | dotnet10 | 10.0.113-10.0.13-0ubuntu1~26.04.1 |
| Ubuntu 26.10 | dotnet10 | 10.0.113-10.0.13-0ubuntu1~26.10.1 |
| Ubuntu 26.10 | dotnet11 | 11.0.100-11.0.0~rc2-0ubuntu1~26.10.1 |
| Wolfi | dotnet-8-sdk | 8.0.132-r0 |
| Wolfi | dotnet-bootstrap-8 | no fix |