CVE-2026-27906

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

CVSS 3.1

4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 32% of CVEs (scores of 2026-10-25)

CWE

CWE-20

Published

2026-04-14

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• microsoft:windows_10_21h2
• microsoft:windows_10_22h2
• microsoft:windows_11_23h2
• microsoft:windows_11_24h2
• microsoft:windows_11_25h2
• microsoft:windows_11_26h1

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27906

Check your stackJSON