CVE-2026-69958: Windows Overlay Filter heap-based buffer overflow

CVE-2026-69958 · Severity: medium · CVSS 6.8 · Published 2026-10-13

Windows Overlay Filter is a Windows system component that handles display overlays. A heap-based buffer overflow vulnerability allows an attacker with physical access to a system to execute arbitrary code with elevated privileges, potentially compromising the entire system.

Technologies: Microsoft Windows Overlay Filter. Vendors: Microsoft.

Quick answers

Is CVE-2026-69958 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-69958 being exploited in the wild.
How severe is CVE-2026-69958?
Medium severity, with a CVSS score of 6.8, published 13 October 2026.
Which products and versions are affected?
Microsoft Windows Overlay Filter.
Is there a fix for CVE-2026-69958?
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-2026-69958 attacked?
It is attacked with physical access, in an operating system.
Am I affected by CVE-2026-69958?
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

A heap-based buffer overflow vulnerability exists in Windows Overlay Filter, triggered via a physical attack vector. The vulnerability allows an attacker to corrupt heap memory and achieve code execution. This requires direct physical access to the target device.

Affected products

  • Microsoft Windows Overlay Filter

Timeline

  • 2026-10-13: disclosed

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.