Nov 2026: Windows Overlay Filter Elevation of Privilege Vulnerability
CVE-2026-121670 Published on November 10, 2026
Windows Overlay Filter Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Overlay Filter allows an authorized attacker to elevate privileges locally.
Weakness Type
What is a Race Condition Vulnerability?
The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.
CVE-2026-121670 has been classified to as a Race Condition vulnerability or weakness.
Products Associated with CVE-2026-121670
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