Quick answers
- Is CVE-2026-73001 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-73001 being exploited in the wild.
- How severe is CVE-2026-73001?
- High severity, with a CVSS score of 7.8, published 8 September 2026.
- Which products and versions are affected?
- Microsoft Windows Biometric Service <UNKNOWN>.
- Is there a fix for CVE-2026-73001?
- 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-2026-73001 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-73001?
- Check whether you run Microsoft Windows Biometric Service 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 heap-based buffer overflow exists in Microsoft Windows Biometric Service that can be triggered by an authenticated local attacker. The vulnerability stems from insufficient bounds checking when processing biometric input, allowing memory corruption. The attack requires local system access and existing user privileges. Successful exploitation results in arbitrary code execution with elevated system privileges. Microsoft has released a patch to address this vulnerability.
Affected products
- Microsoft Windows Biometric Service <UNKNOWN>
Timeline
- 2026-09-08: disclosed