High severity7.0NVD Advisory· Published Oct 13, 2026· Updated Oct 13, 2026

CVE-2026-83879

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Overlay Filter allows an authorized attacker to elevate privileges locally.

Affected products

Microsoft/Windows Overlay Filterllm-fuzzy

Patches

Vulnerability mechanics

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83879nvd

News mentions

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