Local privilege escalation via race-triggered use-after-free

Privilege escalation in Windows MIDI Service Module in Windows 11 24H2, 25H2, and 26H1 allows local users to gain higher privileges via a race condition. Microsoft identifies the flaw as improper synchronization with a resulting use-after-free in the MIDI service module, but has not published the specific code path or object lifetime transition that leaves freed state reachable by another execution path. Exploitation requires local authenticated access and favorable timing, and the published impact is elevation of privilege on the affected Windows host rather than remote code execution.