Improper input validation in Windows Hello allows an authorized attacker to bypass a security feature locally.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Apr 14, 2026 · NIST NVD

   Detected

   Improper input validation in Windows Hello allows an authorized attacker to bypass a security feature locally.

2. Oct 14, 2026 · NIST NVD

   Updated

   Improper input validation in Windows Hello allows an authorized attacker to bypass a security feature locally.

Affected

• cpe microsoft/windows 10 21h2version unspecified
• cpe microsoft/windows 10 22h2version unspecified
• cpe microsoft/windows 11 23h2version unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-27906

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-27906

  30-day exploitation probability 0.4%

  first.org
• NIST NVDVulnerability recordCVE-2026-27906

  Improper input validation in Windows Hello allows an authorized attacker to bypass a security feature locally.

  nvd.nist.gov

References

• Vendor Advisory · msrc.microsoft.com