CVE-2026-96309 | Microsoft Windows up to Server 2025 Windows Subsystem for Linux use after free

October 14, 2026 Yanac

A vulnerability marked as very critical has been reported in Microsoft Windows up to Server 2025. Affected is an unknown function of the component Windows Subsystem for Linux. This manipulation causes use after free.

This vulnerability is registered as CVE-2026-96309. The attack needs to be launched locally. No exploit is available.

Applying a patch is the recommended action to fix this issue.VulDB Recent EntriesRead More