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Description

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

PUBLISHED Reserved 2025-12-11 | Published 2026-02-10 | Updated 2026-02-11 | Assigner microsoft




MEDIUM: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Problem types

CWE-532: Insertion of Sensitive Information into Log File

Product status

10.0.17763.0 (custom) before 10.0.17763.8389
affected

10.0.17763.0 (custom) before 10.0.17763.8389
affected

10.0.17763.0 (custom) before 10.0.17763.8389
affected

10.0.20348.0 (custom) before 10.0.20348.4773
affected

10.0.19044.0 (custom) before 10.0.19044.6937
affected

10.0.19045.0 (custom) before 10.0.19045.6937
affected

10.0.26100.0 (custom) before 10.0.26100.32370
affected

10.0.22631.0 (custom) before 10.0.22631.6649
affected

10.0.22631.0 (custom) before 10.0.22631.6649
affected

10.0.25398.0 (custom) before 10.0.25398.2149
affected

10.0.26100.0 (custom) before 10.0.26100.7840
affected

10.0.26100.0 (custom) before 10.0.26100.32370
affected

10.0.14393.0 (custom) before 10.0.14393.8868
affected

10.0.14393.0 (custom) before 10.0.14393.8868
affected

10.0.14393.0 (custom) before 10.0.14393.8868
affected

6.3.9600.0 (custom) before 6.3.9600.23022
affected

6.3.9600.0 (custom) before 6.3.9600.23022
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21222 (Windows Kernel Information Disclosure Vulnerability) vendor-advisory patch

cve.org (CVE-2026-21222)

nvd.nist.gov (CVE-2026-21222)

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