CVE-2026-83866 | Microsoft Windows up to Server 2025 Win32K use after free

A vulnerability was found in Microsoft Windows. It has been classified as very critical. Affected by this vulnerability is an unknown functionality of the component Win32K. Performing a manipulation results in use after free.

This vulnerability is reported as CVE-2026-83866. The attack requires a local approach. No exploit exists.

To fix this issue, it is recommended to deploy a patch.VulDB Recent EntriesRead More