CVE-2026-69952: Microsoft Windows Overlay Filter out-of-bounds read privilege escalation

CVE-2026-69952 · Severity: high · CVSS 7.8 · Published 2026-10-13

Windows Overlay Filter is a system component that Windows uses to handle visual overlays and window compositing. An authorized attacker with local access can exploit an out-of-bounds read vulnerability to elevate their privileges, potentially gaining system-level control of the computer.

Technologies: Microsoft Windows Overlay Filter. Vendors: Microsoft.

Quick answers

Is CVE-2026-69952 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-69952 being exploited in the wild.
How severe is CVE-2026-69952?
High severity, with a CVSS score of 7.8, published 13 October 2026.
Which products and versions are affected?
Microsoft Windows Overlay Filter.
Is there a fix for CVE-2026-69952?
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-2026-69952 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2026-69952?
Check whether you run Microsoft Windows Overlay Filter. 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

An out-of-bounds read vulnerability in Windows Overlay Filter allows a locally authenticated attacker to read memory outside intended buffer boundaries. The vulnerability requires prior system access and can be leveraged to escalate privileges to a higher integrity level.

Affected products

  • Microsoft Windows Overlay Filter

Timeline

  • 2026-10-13: disclosed

References

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