Microsoft Windows Program Compatibility Assistant Service Privilege Escalation Vulnerability

A time-of-check time-of-use (TOCTOU) race condition vulnerability has been identified in the Program Compatibility Assistant Service of Microsoft Windows. This vulnerability allows an authorized attacker to locally elevate privileges. The issue arises from a race condition, where the timing of events can be manipulated to create unintended consequences, potentially leading to unauthorized access or control.

Impact

Exploitation of this vulnerability could allow an attacker to gain SYSTEM privileges on the affected machine.

Remediation

Users can apply the security update provided by Microsoft to address this vulnerability. This security update is available through the Microsoft Update Catalog. Specific update details can be found in the Microsoft Knowledge Base articles KB5095051, KB5094125, KB5094126, KB5093998, and KB5094127.