CVE-2026-32177
.NET Elevation of Privilege Vulnerability
CVE-2026-32177 is fixed in 95 products on 3 platforms, first by KB5093446, released May 12, 2026. 3 other affected products have no fix yet. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 3 platforms
CVSS
7.3
Important
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0064
50th percentile
<p>Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| .NET 10.0 runtime installed on Windows | KB5093446 | May 12, 2026 | |
| .NET 8.0 runtime installed on Windows | KB5093447 | May 12, 2026 | |
| .NET 9.0 runtime installed on Windows | KB5093448 | May 12, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems | KB5087061 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems | KB5087061 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 | KB5087061 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for ARM64-based Systems | KB5087066 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems | KB5087066 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for x64-based Systems | KB5087064 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for ARM64-based Systems | KB5087064 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for x64-based Systems | KB5087064 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 | KB5087066 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 | KB5087068 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for ARM64-based Systems | KB5087053 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for ARM64-based Systems | KB5087053 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for x64-based Systems | KB5087053 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for x64-based Systems | KB5087058 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for ARM64-based Systems | KB5087054 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for x64-based Systems | KB5087054 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 25H2 for ARM64-based Systems | KB5087051 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 25H2 for x64-based Systems | KB5087051 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 26H1 for ARM64-based Systems | KB5087055 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 version 26H1 for x64-based Systems | KB5087055 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 | KB5087059 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2025 | KB5087051 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 | KB5087048 | May 18, 2026 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 R2 | KB5087049 | May 18, 2026 | |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 | KB5087062 | May 18, 2026 | |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 | KB5087063 | May 18, 2026 | |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems | KB5087065 | May 18, 2026 | |
| Microsoft .NET Framework 4.8 on Windows Server 2012 | KB5087067 | May 18, 2026 | |
| Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | KB5087069 | May 18, 2026 | |
| Microsoft .NET Framework 4.8 on Windows Server 2016 | KB5087065 | May 18, 2026 | |
| Windows apps | |||
| Microsoft .NET Windows Desktop Runtime 8.0 | 8.0.30 | Microsoft .NET Windows Desktop Runtime 8.0 8.0.30 | Jul 23, 2026 |
| Linux | |||
| aspnetcore-runtime-10.0 · amzn 2023 | 10.0.8-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| aspnetcore-runtime-8.0 · amzn 2023 | 8.0.27-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| aspnetcore-runtime-9.0 · amzn 2023 | 9.0.16-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| aspnetcore-runtime-dbg-10.0 · amzn 2023 | 10.0.8-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| aspnetcore-runtime-dbg-8.0 · amzn 2023 | 8.0.27-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| aspnetcore-runtime-dbg-9.0 · amzn 2023 | 9.0.16-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| aspnetcore-targeting-pack-10.0 · amzn 2023 | 10.0.8-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| aspnetcore-targeting-pack-8.0 · amzn 2023 | 8.0.27-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| aspnetcore-targeting-pack-9.0 · amzn 2023 | 9.0.16-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| dotnet · amzn 2023 | 8.0.127-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet-apphost-pack-10.0 · amzn 2023 | 10.0.8-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| dotnet-apphost-pack-10.0-debuginfo · amzn 2023 | 10.0.8-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| dotnet-apphost-pack-8.0 · amzn 2023 | 8.0.27-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet-apphost-pack-8.0-debuginfo · amzn 2023 | 8.0.27-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet-apphost-pack-9.0 · amzn 2023 | 9.0.16-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| dotnet-apphost-pack-9.0-debuginfo · amzn 2023 | 9.0.16-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| dotnet-host · amzn 2023 | 8.0.27-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet-host-debuginfo · amzn 2023 | 8.0.27-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet-hostfxr-10.0 · amzn 2023 | 10.0.8-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| dotnet-hostfxr-10.0-debuginfo · amzn 2023 | 10.0.8-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| dotnet-hostfxr-8.0 · amzn 2023 | 8.0.27-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet-hostfxr-8.0-debuginfo · amzn 2023 | 8.0.27-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet-hostfxr-9.0 · amzn 2023 | 9.0.16-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| dotnet-hostfxr-9.0-debuginfo · amzn 2023 | 9.0.16-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| dotnet-runtime-10.0 · amzn 2023 | 10.0.8-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| dotnet-runtime-10.0-debuginfo · amzn 2023 | 10.0.8-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| dotnet-runtime-8.0 · amzn 2023 | 8.0.27-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet-runtime-8.0-debuginfo · amzn 2023 | 8.0.27-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet-runtime-9.0 · amzn 2023 | 9.0.16-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| dotnet-runtime-9.0-debuginfo · amzn 2023 | 9.0.16-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| dotnet-runtime-dbg-10.0 · amzn 2023 | 10.0.8-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| dotnet-runtime-dbg-8.0 · amzn 2023 | 8.0.27-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet-runtime-dbg-9.0 · amzn 2023 | 9.0.16-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| dotnet-sdk-10.0 · amzn 2023 | 10.0.108-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| dotnet-sdk-10.0-debuginfo · amzn 2023 | 10.0.108-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| dotnet-sdk-10.0-source-built-artifacts · amzn 2023 | 10.0.108-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| dotnet-sdk-8.0 · amzn 2023 | 8.0.127-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet-sdk-8.0-debuginfo · amzn 2023 | 8.0.127-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet-sdk-8.0-source-built-artifacts · amzn 2023 | 8.0.127-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet-sdk-9.0 · amzn 2023 | 9.0.117-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| dotnet-sdk-9.0-debuginfo · amzn 2023 | 9.0.117-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| dotnet-sdk-9.0-source-built-artifacts · amzn 2023 | 9.0.117-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| dotnet-sdk-aot-10.0 · amzn 2023 | 10.0.108-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| dotnet-sdk-aot-10.0-debuginfo · amzn 2023 | 10.0.108-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| dotnet-sdk-aot-9.0 · amzn 2023 | 9.0.117-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| dotnet-sdk-aot-9.0-debuginfo · amzn 2023 | 9.0.117-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| dotnet-sdk-dbg-10.0 · amzn 2023 | 10.0.108-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| dotnet-sdk-dbg-8.0 · amzn 2023 | 8.0.127-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet-sdk-dbg-9.0 · amzn 2023 | 9.0.117-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| dotnet-targeting-pack-10.0 · amzn 2023 | 10.0.8-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| dotnet-targeting-pack-8.0 · amzn 2023 | 8.0.27-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet-targeting-pack-9.0 · amzn 2023 | 9.0.16-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| dotnet-templates-10.0 · amzn 2023 | 10.0.108-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| dotnet-templates-8.0 · amzn 2023 | 8.0.127-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet-templates-9.0 · amzn 2023 | 9.0.117-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| dotnet10.0-debuginfo · amzn 2023 | 10.0.108-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| dotnet10.0-debugsource · amzn 2023 | 10.0.108-1.amzn2023.0.1 | ALAS2023-2026-1803 | Jun 8, 2026 |
| dotnet8.0-debuginfo · amzn 2023 | 8.0.127-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet8.0-debugsource · amzn 2023 | 8.0.127-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| dotnet9.0-debugsource · amzn 2023 | 9.0.117-1.amzn2023.0.2 | ALAS2023-2026-1802 | Jun 8, 2026 |
| netstandard-targeting-pack-2.1 · amzn 2023 | 8.0.127-1.amzn2023.0.1 | ALAS2023-2026-1804 | Jun 8, 2026 |
| No fix yet | |||
| Microsoft Windows Desktop Runtime - 8.0.25 (arm64) (Windows apps) | No fix yet | no-fix | n/a |
| Microsoft Windows Desktop Runtime - 8.0.25 (x64) (Windows apps) | No fix yet | no-fix | n/a |
| Microsoft Windows Desktop Runtime - 8.0.25 (x86) (Windows apps) | No fix yet | no-fix | n/a |
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