Quick answers
- Is CVE-2026-73015 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-73015 being exploited in the wild.
- How severe is CVE-2026-73015?
- 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-2026-73015?
- 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-2026-73015 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-73015?
- 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
This vulnerability is a heap-based buffer overflow in Microsoft Windows Biometric Service that can be triggered by an authenticated local attacker. The flaw allows an attacker with valid user credentials to overflow a heap buffer, leading to memory corruption. Successful exploitation results in privilege escalation, enabling the attacker to execute code with SYSTEM-level privileges. The attack requires local access and prior authentication; it is not remotely exploitable over the network. A patch has been released by Microsoft and should be applied immediately to affected systems.
Affected products
- Microsoft Windows Biometric Service <UNKNOWN>
Timeline
- 2026-09-08: disclosed