CVE-2026-70197
Fixed in a distro release EPSS <1%CVSS 8.1
Out-of-bounds write in .NET allows an unauthorized attacker to execute code over a network.
Products: Microsoft .NET 10.0 installed on Linux, Microsoft .NET 10.0 installed on Mac OS, Microsoft .NET 10.0 installed on Windows, Microsoft .NET 10.0 runtime, Microsoft .NET 11.0 installed on Linux, Microsoft .NET 11.0 installed on Mac OS, Microsoft .NET 11.0 installed on Windows, Microsoft .NET 11.0 runtime, Microsoft .NET 8.0 installed on Linux, Microsoft .NET 8.0 installed on Mac OS, Microsoft .NET 8.0 installed on Windows, Microsoft .NET 8.0 runtime, Microsoft .NET 9.0 installed on Linux, Microsoft .NET 9.0 installed on Mac OS, Microsoft .NET 9.0 installed on Windows, Microsoft .NET 9.0 runtime, Microsoft Visual Studio 2019 version 16.11, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft Visual Studio 2026 version 18.11, Microsoft Visual Studio 2026 version 18.12
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| NuGet | Microsoft.NETCore.App.Runtime.win-arm64 | 8.0.32 |
| NuGet | Microsoft.NETCore.App.Runtime.win-arm64 | 11.0.0-rc.2 |
| NuGet | Microsoft.NETCore.App.Runtime.win-arm64 | 9.0.21 |
| NuGet | Microsoft.NETCore.App.Runtime.win-arm64 | 10.0.13 |
| NuGet | Microsoft.NETCore.App.Runtime.win-x64 | 8.0.32 |
| NuGet | Microsoft.NETCore.App.Runtime.win-x64 | 11.0.0-rc.2 |
| NuGet | Microsoft.NETCore.App.Runtime.win-x64 | 9.0.21 |
| NuGet | Microsoft.NETCore.App.Runtime.win-x64 | 10.0.13 |
| NuGet | Microsoft.NETCore.App.Runtime.win-x86 | 8.0.32 |
| NuGet | Microsoft.NETCore.App.Runtime.win-x86 | 11.0.0-rc.2 |
| NuGet | Microsoft.NETCore.App.Runtime.win-x86 | 9.0.21 |
| NuGet | Microsoft.NETCore.App.Runtime.win-x86 | 10.0.13 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| 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 |
| Ubuntu 22.04 LTS | dotnet7 | no fix |