Quick answers
- Is CVE-2026-83975 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-83975 being exploited in the wild.
- How severe is CVE-2026-83975?
- High severity, with a CVSS score of 7.8, published 8 September 2026.
- Which products and versions are affected?
- Microsoft Windows Biometric Service.
- Is there a fix for CVE-2026-83975?
- 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-2026-83975 attacked?
- It is attacked with local access, in an operating system.
- Am I affected by CVE-2026-83975?
- 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 authenticated local attacker. The vulnerability requires prior authentication and local access to the system. Successful exploitation allows an attacker to overwrite heap memory structures and execute arbitrary code with elevated privileges, achieving privilege escalation from a standard user account to SYSTEM level. The vulnerability has been assigned CVE-2026-83975 with a CVSS score of 7.8, indicating high severity.
Affected products
- Microsoft Windows Biometric Service
Timeline
- 2026-09-08: disclosed