CVE-2026-87697
Fixed in a distro release EPSS <1%CVSS 8.8
Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code over a network.
Products: Microsoft .NET 10.0 runtime, Microsoft .NET 11.0 runtime, Microsoft .NET 8.0 runtime, Microsoft .NET 9.0 runtime, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-arm64 | 9.0.21 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-arm64 | 8.0.32 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-arm64 | 11.0.0-rc.2 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-arm64 | 10.0.13 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-x64 | 9.0.21 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-x64 | 8.0.32 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-x64 | 11.0.0-rc.2 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-x64 | 10.0.13 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-x86 | 9.0.21 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-x86 | 8.0.32 |
| NuGet | Microsoft.WindowsDesktop.App.Runtime.win-x86 | 11.0.0-rc.2 |
| NuGet | Microsoft.WindowsDesktop.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 |