CVE-2026-70273 | Microsoft Windows up to Server 2025 Win32 Kernel Subsystem use after free

October 14, 2026 Yanac

A vulnerability classified as very critical was found in Microsoft Windows 11 24H2/11 25H2/11 26H1/11 26H2/Server 2025. Affected is an unknown function of the component Win32 Kernel Subsystem. The manipulation results in use after free.

This vulnerability is cataloged as CVE-2026-70273. The attack must be initiated from a local position. There is no exploit available.

Applying a patch is advised to resolve this issue.VulDB Recent EntriesRead More