Description
Improper input validation in Windows Hello allows an authorized attacker to bypass a security feature locally.
Affected products
microsoft: windows 10 21h2; microsoft: windows 10 22h2; microsoft: windows 11 23h2; microsoft: windows 11 24h2; microsoft: windows 11 25h2; microsoft: windows 11 26h1
References1
- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27906 Vendor Advisory
Metrics
- CVSS 3.1
-
4.4
MEDIUM
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - EPSS — exploit probability
- 0% percentile: 35 · as of 12 November 2026
- CWE
- CWE-20
Could this be exploited in your environment?
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