CVE-2026-85804 | Microsoft Windows up to Server 2025 Win32 Kernel Subsystem use after free

October 14, 2026 Yanac

A vulnerability categorized as very critical has been discovered in Microsoft Windows 11 23H2/11 24H2/11 25H1/11 26H2/Server 2025. This vulnerability affects unknown code of the component Win32 Kernel Subsystem. Executing a manipulation can lead to use after free.

The identification of this vulnerability is CVE-2026-85804. The attack can only be executed locally. There is no exploit available.

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