Local privilege escalation through undisclosed Win32k flaw

Elevation of privilege in Win32k in Microsoft Windows 11 version 21H2 before 10.0.22000.434 allows local users to gain elevated rights. Microsoft has not published the affected Win32k function, the input that reaches it, or the incorrect operation responsible for the privilege boundary failure. Exploitation requires existing low-privileged local access, needs no user interaction, and can compromise confidentiality, integrity, and availability under elevated privileges.