CVE-2026-20818

Published: Jan 13, 2026

Modified: Apr 1, 2026

PUBLISHED

CVSS v3.1

6.2

MEDIUM

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

Vendor	Product	Versions
Microsoft	Windows Server 2016	affected `10.0.14393.0 - < 10.0.14393.8783`
Microsoft	Windows Server 2016 (Server Core installation)	affected `10.0.14393.0 - < 10.0.14393.8783`
Microsoft	Windows Server 2019	affected `10.0.17763.0 - < 10.0.17763.8276`
Microsoft	Windows Server 2019 (Server Core installation)	affected `10.0.17763.0 - < 10.0.17763.8276`
Microsoft	Windows Server 2022	affected `10.0.20348.0 - < 10.0.20348.4648`
Microsoft	Windows Server 2022, 23H2 Edition (Server Core installation)	affected `10.0.25398.0 - < 10.0.25398.2092`
Microsoft	Windows Server 2025	affected `10.0.26100.0 - < 10.0.26100.32230`
Microsoft	Windows Server 2025 (Server Core installation)	affected `10.0.26100.0 - < 10.0.26100.32230`

CVSS v3.1 Vector

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

vendor-advisory

patch

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