CVE-2025-36854 | Microsoft .AspNetCore.App.Runtime.osx-x64 up to 6.0.36 HTTP3 Response Body use after free
A vulnerability, which was classified as critical, was found in Microsoft .NET 6.0, .AspNetCore.Identity, .AspNetCore.App.Runtime.win-arm, .AspNetCore.App.Runtime.win-arm64, .AspNetCore.App.Runtime.win-x64, .AspNetCore.App.Runtime.win-x86, .AspNetCore.App.Runtime.linux-arm, .AspNetCore.App.Runtime.linux-arm64, .AspNetCore.App.Runtime.linux-musl-arm, .AspNetCore.App.Runtime.linux-musl-arm64, .AspNetCore.App.Runtime.linux-musl-x64, .AspNetCore.App.Runtime.linux-x64, .AspNetCore.App.Runtime.osx-arm64 and .AspNetCore.App.Runtime.osx-x64 up to 6.0.36. Affected is an unknown function of the component HTTP3 Response Body Handler. Executing manipulation can lead to use after free. This vulnerability only affects products that are no longer supported by the maintainer.
This vulnerability is registered as CVE-2025-36854. It is possible to launch the attack remotely. No exploit is available.