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High severity7.7NVD Advisory· Published Jan 13, 2026· Updated Jul 30, 2026

CVE-2026-20804

CVE-2026-20804

Description

Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering locally.

Affected products

29
  • Microsoft/Windows 10 16076 versions
    cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:*:*+ 5 more
    • cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:*:*range: <10.0.14393.8783
    • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*range: <10.0.19044.6809
    • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*range: <10.0.19045.6809
    • (no CPE)range: 10.0.14393.0
    • (no CPE)range: 10.0.19044.0
    • (no CPE)range: 10.0.19045.0
  • Microsoft/Windows 10 18092 versions
    cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*range: <10.0.17763.8276
    • (no CPE)range: 10.0.17763.0
  • Microsoft/Windows 11 23h22 versions
    cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*range: <10.0.22631.6491
    • (no CPE)range: 10.0.22631.0
  • Microsoft/Windows 11 24h22 versions
    cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*range: <10.0.26100.7623
    • (no CPE)range: 10.0.26100.0
  • Microsoft/Windows 11 25h22 versions
    cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:*range: <10.0.26200.7623
    • (no CPE)range: 10.0.26200.0
  • Microsoft/Windows Server 20162 versions
    cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*range: <10.0.14393.8783
    • (no CPE)range: 10.0.14393.0
  • Microsoft/Windows Server 20192 versions
    cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*range: <10.0.17763.8276
    • (no CPE)range: 10.0.17763.0
  • Microsoft/Windows Server 20032 versions
    cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*range: <10.0.20348.4648
    • (no CPE)range: 10.0.20348.0
  • Microsoft/Windows Server 2012
    cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*
    Range: <10.0.25398.2092
  • Microsoft/Windows Server 20252 versions
    cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*range: <10.0.26100.32230
    • (no CPE)range: 10.0.26100.0
  • Microsoft/Windows Hellollm-fuzzy
  • Microsoft/Windows 10 version 1607cpe-rescue
    Range: 10.0.22631.0
  • Microsoft/Windows Server 2016 (Server Core installation)v5
    Range: 10.0.14393.0
  • Microsoft/Windows Server 2019 (Server Core installation)v5
    Range: 10.0.17763.0
  • Microsoft/Windows Server 2022, 23H2 Edition (Server Core installation)v5
    Range: 10.0.25398.0
  • Microsoft/Windows Server 2025 (Server Core installation)v5
    Range: 10.0.26100.0

Patches

Vulnerability mechanics

References

1

News mentions

0

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