CVE-2026-21242 | Microsoft Windows up to Server 2025 Subsystem for Linux use after free
A vulnerability classified as critical has been found in Microsoft Windows up to Server 2025. Affected is an unknown function of the component Subsystem for Linux. Performing a manipulation results in use after free.
This vulnerability is reported as CVE-2026-21242. The attack requires a local approach. No exploit exists.
To fix this issue, it is recommended to deploy a patch.