Quick answers
- Is CVE-2026-69773 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-69773 being exploited in the wild.
- How severe is CVE-2026-69773?
- High severity, with a CVSS score of 8, published 8 September 2026.
- Which products and versions are affected?
- Microsoft Windows Biometric Service.
- Is there a fix for CVE-2026-69773?
- 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-2026-69773 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-69773?
- Check whether you run Microsoft Windows Biometric Service. 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 exists in the Windows Biometric Service that can be triggered by an authorized network attacker. The vulnerability allows an attacker to write data beyond allocated buffer boundaries in the heap, enabling arbitrary code execution with elevated privileges. The attack requires prior authentication and network access to the affected system. Successful exploitation leads to privilege escalation, allowing an attacker to gain SYSTEM-level access. Microsoft has released security updates to patch this vulnerability.
Affected products
- Microsoft Windows Biometric Service
Timeline
- 2026-09-08: disclosed