CVE-2026-20818

EUVD-2026-2190
Insertion of sensitive information into log file in Windows Kernel allows an unauthorized attacker to disclose information locally.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.2 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
microsoftCNA
6.2 MEDIUM
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
Base Score
CVSS 3.x
EPSS Score
Percentile: 11%
Affected Products (NVD)
VendorProductVersion
microsoftwindows_server_2016
𝑥
< 10.0.14393.8783
microsoftwindows_server_2019
𝑥
< 10.0.17763.8276
microsoftwindows_server_2022
𝑥
< 10.0.20348.4648
microsoftwindows_server_2022_23h2
𝑥
< 10.0.25398.2092
microsoftwindows_server_2025
𝑥
< 10.0.26100.7623
𝑥
= Vulnerable software versions
Windows Releases
Platform
Version
Windows Server 2016
Server Core
KB5073722
Standard
KB5073722
Windows Server 2019
Server Core
KB5073723
Standard
KB5073723
Windows Server 2022
23H2 Server Core
KB5073450
Server Core
KB5073457
Standard
KB5073457
Windows Server 2025
Server Core
KB5073379
Standard
KB5073379
Common Weakness Enumeration
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20818