Quick answers
- Is CVE-2026-69373 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-69373 being exploited in the wild.
- How severe is CVE-2026-69373?
- Medium severity, with a CVSS score of 6.7, published 8 September 2026.
- Which products and versions are affected?
- Microsoft Windows Overlay Filter <UNKNOWN>.
- Is there a fix for CVE-2026-69373?
- 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-2026-69373 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-69373?
- 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
The vulnerability is an integer overflow or wraparound in the Windows Overlay Filter kernel driver that allows an authorized attacker to trigger memory corruption via a crafted input. The attack requires local system access and involves interaction with the driver's input handling routines. Successful exploitation permits privilege escalation from a low-privileged user context to kernel level, enabling complete system compromise. A security patch is expected from Microsoft; patch status should be confirmed via the Microsoft Security Update Guide.
Affected products
- Microsoft Windows Overlay Filter <UNKNOWN>
Timeline
- 2026-09-08: disclosed