CVE-2026-20818

MEDIUM

Windows Server Information Disclosure via Log File Insertion

Title source: llm
STIX 2.1

Description

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

References (1)

Core 1
Core References

Scores

CVSS v3 6.2
EPSS 0.0069
EPSS Percentile 47.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-532
Status published
Products (13)
Microsoft/Windows Server 2016 10.0.14393.0 - 10.0.14393.8783
Microsoft/Windows Server 2016 (Server Core installation) 10.0.14393.0 - 10.0.14393.8783
Microsoft/Windows Server 2019 10.0.17763.0 - 10.0.17763.8276
Microsoft/Windows Server 2019 (Server Core installation) 10.0.17763.0 - 10.0.17763.8276
Microsoft/Windows Server 2022 10.0.20348.0 - 10.0.20348.4648
Microsoft/Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 - 10.0.25398.2092
Microsoft/Windows Server 2025 10.0.26100.0 - 10.0.26100.32230
Microsoft/Windows Server 2025 (Server Core installation) 10.0.26100.0 - 10.0.26100.32230
microsoft/windows_server_2016 < 10.0.14393.8783
microsoft/windows_server_2019 < 10.0.17763.8276
... and 3 more
Published Jan 13, 2026
Tracked Since Feb 18, 2026