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Description

Generation of error message containing sensitive information in Windows Kernel allows an authorized attacker to disclose information locally.

PUBLISHED Reserved 2025-12-03 | Published 2026-01-13 | Updated 2026-02-22 | 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-209: Generation of Error Message Containing Sensitive Information

Product status

10.0.22631.0 (custom) before 10.0.22631.6491
affected

10.0.22631.0 (custom) before 10.0.22631.6491
affected

10.0.26100.0 (custom) before 10.0.26100.7623
affected

10.0.26200.0 (custom) before 10.0.26200.7623
affected

10.0.20348.0 (custom) before 10.0.20348.4648
affected

10.0.25398.0 (custom) before 10.0.25398.2092
affected

10.0.26100.0 (custom) before 10.0.26100.32230
affected

10.0.26100.0 (custom) before 10.0.26100.32230
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20838 (Windows Kernel Information Disclosure Vulnerability) vendor-advisory patch

cve.org (CVE-2026-20838)

nvd.nist.gov (CVE-2026-20838)

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