Medium · 5.5 CVE-2026-21222 EUVD-2026-7311GHSA-qr2v-788m-xvqc

Windows Kernel Information Disclosure Vulnerability

Published Feb 10, 2026 · Updated Aug 19, 2026 · Assigned by microsoft

Vendor: Microsoft Product: Windows 10 Version 1607 Product: Windows 10 Version 1809 Product: Windows 10 Version 21H2 Product: Windows 10 Version 22H2 Product: Windows 11 version 22H3 Product: Windows 11 version 23H2 Product: Windows 11 Version 24H2 Product: Windows Server 2012 R2 Product: Windows Server 2012 R2 (Server Core installation) Product: Windows Server 2016 Product: Windows Server 2016 (Server Core installation) Product: Windows Server 2019 Product: Windows Server 2019 (Server Core installation) Product: Windows Server 2022 Product: Windows Server 2022, 23H2 Edition (Server Core installation) Product: Windows Server 2025 Product: Windows Server 2025 (Server Core installation) Platform: Windows

Description

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

Affected products

Vendor	Product	Affected	Fixed
Microsoft	Windows 10 Version 1607	10.0.14393.0 – < 10.0.14393.8868	10.0.14393.8868
Microsoft	Windows 10 Version 1809	10.0.17763.0 – < 10.0.17763.8389	10.0.17763.8389
Microsoft	Windows 10 Version 21H2	10.0.19044.0 – < 10.0.19044.6937	10.0.19044.6937
Microsoft	Windows 10 Version 22H2	10.0.19045.0 – < 10.0.19045.6937	10.0.19045.6937
Microsoft	Windows 11 version 22H3	10.0.22631.0 – < 10.0.22631.6649	10.0.22631.6649
Microsoft	Windows 11 Version 23H2	10.0.22631.0 – < 10.0.22631.6649	10.0.22631.6649
Microsoft	Windows 11 Version 24H2	10.0.26100.0 – < 10.0.26100.7840	10.0.26100.7840
Microsoft	Windows Server 2012 R2	6.3.9600.0 – < 6.3.9600.23022	6.3.9600.23022
Microsoft	Windows Server 2012 R2 (Server Core installation)	6.3.9600.0 – < 6.3.9600.23022	6.3.9600.23022
Microsoft	Windows Server 2016	10.0.14393.0 – < 10.0.14393.8868	10.0.14393.8868
Microsoft	Windows Server 2016 (Server Core installation)	10.0.14393.0 – < 10.0.14393.8868	10.0.14393.8868
Microsoft	Windows Server 2019	10.0.17763.0 – < 10.0.17763.8389	10.0.17763.8389
Microsoft	Windows Server 2019 (Server Core installation)	10.0.17763.0 – < 10.0.17763.8389	10.0.17763.8389
Microsoft	Windows Server 2022	10.0.20348.0 – < 10.0.20348.4773	10.0.20348.4773
Microsoft	Windows Server 2022, 23H2 Edition (Server Core installation)	10.0.25398.0 – < 10.0.25398.2149	10.0.25398.2149
Microsoft	Windows Server 2025	10.0.26100.0 – < 10.0.26100.32370	10.0.26100.32370
Microsoft	Windows Server 2025 (Server Core installation)	10.0.26100.0 – < 10.0.26100.32370	10.0.26100.32370

Advisories 3

WID-SEC-2026-0369 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 26, 2026
NCSC-2026-0053 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Feb 10, 2026
MSRC-CVE-2026-21222 Windows Kernel Information Disclosure Vulnerability Microsoft Security Response Center · Feb 10, 2026

References

Windows Kernel Information Disclosure Vulnerability vendor-advisory patch