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CVE-2026-21222

Windows Kernel Information Disclosure Vulnerability

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 10.0.14393.8868, 10.0.17763.8389, 10.0.19044.6937, 10.0.19045.6937, 10.0.22631.6649, and 5 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

Insertion of sensitive information into log file in Windows Kernel allows an authorized attacker to disclose information locally.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Microsoft Windows 10 Version 1607

    From 10.0.14393.0 · fixed in 10.0.14393.8868

  • Microsoft Windows 10 Version 1809

    From 10.0.17763.0 · fixed in 10.0.17763.8389

  • Microsoft Windows 10 Version 21H2

    From 10.0.19044.0 · fixed in 10.0.19044.6937

  • Microsoft Windows 10 Version 22H2

    From 10.0.19045.0 · fixed in 10.0.19045.6937

  • Microsoft Windows 11 version 22H3

    From 10.0.22631.0 · fixed in 10.0.22631.6649

  • Microsoft Windows 11 Version 23H2

    From 10.0.22631.0 · fixed in 10.0.22631.6649

  • Microsoft Windows 11 Version 24H2

    From 10.0.26100.0 · fixed in 10.0.26100.7840

  • Microsoft Windows Server 2012 R2

    From 6.3.9600.0 · fixed in 6.3.9600.23022

  • Microsoft Windows Server 2012 R2 (Server Core installation)

    From 6.3.9600.0 · fixed in 6.3.9600.23022

  • Microsoft Windows Server 2016

    From 10.0.14393.0 · fixed in 10.0.14393.8868

  • Microsoft Windows Server 2016 (Server Core installation)

    From 10.0.14393.0 · fixed in 10.0.14393.8868

  • Microsoft Windows Server 2019

    From 10.0.17763.0 · fixed in 10.0.17763.8389

  • Microsoft Windows Server 2019 (Server Core installation)

    From 10.0.17763.0 · fixed in 10.0.17763.8389

  • Microsoft Windows Server 2022

    From 10.0.20348.0 · fixed in 10.0.20348.4773

  • Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)

    From 10.0.25398.0 · fixed in 10.0.25398.2149

  • Microsoft Windows Server 2025

    From 10.0.26100.0 · fixed in 10.0.26100.32370

  • Microsoft Windows Server 2025 (Server Core installation)

    From 10.0.26100.0 · fixed in 10.0.26100.32370

References 1

msrc.microsoft.com