{"id":"CVE-2026-27906","title":"Windows Hello Security Feature Bypass Vulnerability","summary":"Improper input validation in Windows Hello allows an authorized attacker to bypass a security feature locally.","severity":"medium","cvss":4.4,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-20"],"vendor":"Microsoft","product":"Windows 10 Version 21H2","affected":["windows_10_version_21h2 >= 10.0.19044.0 < 10.0.19044.7184","windows_10_version_22h2 >= 10.0.19045.0 < 10.0.19045.7184","windows_11_version_22h3 >= 10.0.22631.0 < 10.0.22631.6936","windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.6936","windows_11_version_24h2 >= 10.0.26100.0 < 10.0.26100.8246","windows_11_version_25h2 >= 10.0.26200.0 < 10.0.26200.8246","windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.1836"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-04-14T18:03:47.349252Z"},"published":"2026-04-14","updated":"2026-09-25","sourceUpdated":"2026-09-25T17:25:02.888Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-27906","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27906","label":"Windows Hello Security Feature Bypass Vulnerability"}],"tags":["cve.org"],"epss":0.00409,"epssPercentile":0.32308,"ingestedAt":"2026-09-25T18:14:20.456Z","slug":"CVE-2026-27906","body":"## Overview\n\nImproper input validation in Windows Hello allows an authorized attacker to bypass a security feature locally.\n\n## Affected\n\n- `windows_10_version_21h2 >= 10.0.19044.0 < 10.0.19044.7184`\n- `windows_10_version_22h2 >= 10.0.19045.0 < 10.0.19045.7184`\n- `windows_11_version_22h3 >= 10.0.22631.0 < 10.0.22631.6936`\n- `windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.6936`\n- `windows_11_version_24h2 >= 10.0.26100.0 < 10.0.26100.8246`\n- `windows_11_version_25h2 >= 10.0.26200.0 < 10.0.26200.8246`\n- `windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.1836`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":24.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}