CVE-2026-112813: Microsoft Windows Overlay Filter race condition privilege escalation

CVE-2026-112813 · Severity: medium · CVSS 4.7 · Published 2026-11-10

Windows Overlay Filter, a component used by Windows for managing file system operations, contains a race condition vulnerability that allows an authorized local user to elevate their privileges on the system. An attacker who has already gained user-level access could exploit this flaw to gain administrative control of the affected computer.

Technologies: Microsoft Windows Overlay Filter. Vendors: Microsoft.

Quick answers

Is CVE-2026-112813 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-112813 being exploited in the wild.
How severe is CVE-2026-112813?
Medium severity, with a CVSS score of 4.7, published 10 November 2026.
Which products and versions are affected?
Microsoft Windows Overlay Filter <UNKNOWN>.
Is there a fix for CVE-2026-112813?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-112813 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2026-112813?
Check whether you run Microsoft Windows Overlay Filter at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A race condition exists in the Windows Overlay Filter due to improper synchronization when multiple threads access shared resources. An authenticated local attacker can trigger the race condition to cause a privilege escalation from user to system level. The vulnerability requires local access and existing user privileges to exploit.

Affected products

  • Microsoft Windows Overlay Filter <UNKNOWN>

Timeline

  • 2026-11-10: disclosed

References

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