CVE-2026-70197
.NET and Visual Studio Remote Code Execution Vulnerability
CVE-2026-70197 is fixed in 79 products on 3 platforms, first by Microsoft .NET Windows Desktop Runtime 10.0 10.0.13, released October 4, 2026. 3 other affected products have no fix yet. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 3 platforms
CVSS
8.1
Important
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0079
56th percentile
<p>Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| .NET 10.0 installed on Linux | KB5133966 | Oct 25, 2026 | |
| .NET 10.0 installed on Mac OS | KB5133966 | Oct 25, 2026 | |
| .NET 10.0 installed on Windows | KB5133966 | Oct 25, 2026 | |
| .NET 10.0 runtime installed on Windows | KB5130036 | Oct 13, 2026 | |
| .NET 8.0 installed on Linux | KB5133964 | Oct 25, 2026 | |
| .NET 8.0 installed on Mac OS | KB5133964 | Oct 25, 2026 | |
| .NET 8.0 installed on Windows | KB5133964 | Oct 25, 2026 | |
| .NET 8.0 runtime installed on Windows | KB5130034 | Oct 13, 2026 | |
| .NET 9.0 installed on Linux | KB5133965 | Oct 25, 2026 | |
| .NET 9.0 installed on Mac OS | KB5133965 | Oct 25, 2026 | |
| .NET 9.0 installed on Windows | KB5133965 | Oct 25, 2026 | |
| .NET 9.0 runtime installed on Windows | KB5130035 | Oct 13, 2026 | |
| Windows apps | |||
| Microsoft .NET Windows Desktop Runtime 10.0 | 10.0.13 | Microsoft .NET Windows Desktop Runtime 10.0 10.0.13 | Oct 4, 2026 |
| Microsoft .NET Windows Desktop Runtime 8.0 | 8.0.32 | Microsoft .NET Windows Desktop Runtime 8.0 8.0.32 | Oct 5, 2026 |
| Microsoft .NET Windows Desktop Runtime 9.0 | 9.0.21 | Microsoft .NET Windows Desktop Runtime 9.0 9.0.21 | Oct 5, 2026 |
| Microsoft ASP.NET Core Hosting Bundle 10.0 | 10.0.13 | Microsoft ASP.NET Core Hosting Bundle 10.0 10.0.13 | Oct 5, 2026 |
| Microsoft ASP.NET Core Hosting Bundle 8.0 | 8.0.32 | Microsoft ASP.NET Core Hosting Bundle 8.0 8.0.32 | Oct 5, 2026 |
| Microsoft ASP.NET Core Hosting Bundle 9.0 | 9.0.21 | Microsoft ASP.NET Core Hosting Bundle 9.0 9.0.21 | Oct 5, 2026 |
| Linux | |||
| aspnetcore-runtime-10.0 · amzn 2023 | 10.0.14-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| aspnetcore-runtime-8.0 · amzn 2023 | 8.0.33-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| aspnetcore-runtime-9.0 · amzn 2023 | 9.0.22-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| aspnetcore-runtime-dbg-10.0 · amzn 2023 | 10.0.14-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| aspnetcore-runtime-dbg-8.0 · amzn 2023 | 8.0.33-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| aspnetcore-runtime-dbg-9.0 · amzn 2023 | 9.0.22-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| aspnetcore-targeting-pack-10.0 · amzn 2023 | 10.0.14-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| aspnetcore-targeting-pack-8.0 · amzn 2023 | 8.0.33-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| aspnetcore-targeting-pack-9.0 · amzn 2023 | 9.0.22-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet · amzn 2023 | 9.0.123-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet-apphost-pack-10.0 · amzn 2023 | 10.0.14-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| dotnet-apphost-pack-10.0-debuginfo · amzn 2023 | 10.0.14-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| dotnet-apphost-pack-8.0 · amzn 2023 | 8.0.33-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| dotnet-apphost-pack-8.0-debuginfo · amzn 2023 | 8.0.33-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| dotnet-apphost-pack-9.0 · amzn 2023 | 9.0.22-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet-apphost-pack-9.0-debuginfo · amzn 2023 | 9.0.22-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet-host · amzn 2023 | 9.0.22-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet-host-debuginfo · amzn 2023 | 9.0.22-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet-hostfxr-10.0 · amzn 2023 | 10.0.14-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| dotnet-hostfxr-10.0-debuginfo · amzn 2023 | 10.0.14-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| dotnet-hostfxr-8.0 · amzn 2023 | 8.0.33-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| dotnet-hostfxr-8.0-debuginfo · amzn 2023 | 8.0.33-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| dotnet-hostfxr-9.0 · amzn 2023 | 9.0.22-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet-hostfxr-9.0-debuginfo · amzn 2023 | 9.0.22-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet-runtime-10.0 · amzn 2023 | 10.0.14-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| dotnet-runtime-10.0-debuginfo · amzn 2023 | 10.0.14-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| dotnet-runtime-8.0 · amzn 2023 | 8.0.33-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| dotnet-runtime-8.0-debuginfo · amzn 2023 | 8.0.33-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| dotnet-runtime-9.0 · amzn 2023 | 9.0.22-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet-runtime-9.0-debuginfo · amzn 2023 | 9.0.22-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet-runtime-dbg-10.0 · amzn 2023 | 10.0.14-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| dotnet-runtime-dbg-8.0 · amzn 2023 | 8.0.33-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| dotnet-runtime-dbg-9.0 · amzn 2023 | 9.0.22-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet-sdk-10.0 · amzn 2023 | 10.0.114-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| dotnet-sdk-10.0-debuginfo · amzn 2023 | 10.0.114-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| dotnet-sdk-10.0-source-built-artifacts · amzn 2023 | 10.0.114-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| dotnet-sdk-8.0 · amzn 2023 | 8.0.133-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| dotnet-sdk-8.0-debuginfo · amzn 2023 | 8.0.133-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| dotnet-sdk-8.0-source-built-artifacts · amzn 2023 | 8.0.133-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| dotnet-sdk-9.0 · amzn 2023 | 9.0.123-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet-sdk-9.0-debuginfo · amzn 2023 | 9.0.123-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet-sdk-9.0-source-built-artifacts · amzn 2023 | 9.0.123-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet-sdk-aot-10.0 · amzn 2023 | 10.0.114-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| dotnet-sdk-aot-10.0-debuginfo · amzn 2023 | 10.0.114-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| dotnet-sdk-aot-9.0 · amzn 2023 | 9.0.123-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet-sdk-aot-9.0-debuginfo · amzn 2023 | 9.0.123-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet-sdk-dbg-10.0 · amzn 2023 | 10.0.114-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| dotnet-sdk-dbg-8.0 · amzn 2023 | 8.0.133-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| dotnet-sdk-dbg-9.0 · amzn 2023 | 9.0.123-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet-targeting-pack-10.0 · amzn 2023 | 10.0.14-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| dotnet-targeting-pack-8.0 · amzn 2023 | 8.0.33-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| dotnet-targeting-pack-9.0 · amzn 2023 | 9.0.22-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet-templates-10.0 · amzn 2023 | 10.0.114-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| dotnet-templates-8.0 · amzn 2023 | 8.0.133-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| dotnet-templates-9.0 · amzn 2023 | 9.0.123-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| dotnet10.0-debuginfo · amzn 2023 | 10.0.114-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| dotnet10.0-debugsource · amzn 2023 | 10.0.114-1.amzn2023.0.1 | ALAS2023-2026-3366 | Nov 7, 2026 |
| dotnet8.0-debuginfo · amzn 2023 | 8.0.133-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| dotnet8.0-debugsource · amzn 2023 | 8.0.133-1.amzn2023.0.1 | ALAS2023-2026-3367 | Nov 7, 2026 |
| dotnet9.0-debugsource · amzn 2023 | 9.0.123-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 2026 |
| netstandard-targeting-pack-2.1 · amzn 2023 | 9.0.123-1.amzn2023.0.1 | ALAS2023-2026-3374 | Nov 7, 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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