CVE-2026-70249 | Microsoft Windows up to Server 2025 Win32 Kernel Subsystem use after free

October 14, 2026 Yanac

A vulnerability marked as very critical has been reported in Microsoft Windows. The impacted element is an unknown function of the component Win32 Kernel Subsystem. Performing a manipulation results in use after free.

This vulnerability is identified as CVE-2026-70249. The attack is only possible with local access. There is not any exploit available.

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