CVE-2025-59257

EUVD-2025-34372
Improper validation of specified type of input in Windows Local Session Manager (LSM) allows an authorized attacker to deny service over a network.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
microsoftCNA
6.5 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
Base Score
CVSS 3.x
EPSS Score
Percentile: 58%
Affected Products (NVD)
VendorProductVersion
microsoftwindows_11_24h2
𝑥
< 10.0.26100.6899
microsoftwindows_11_25h2
𝑥
< 10.0.26200.6899
microsoftwindows_server_2022_23h2
𝑥
< 10.0.25398.1913
microsoftwindows_server_2025
𝑥
≤ 10.0.26100.6899
𝑥
= Vulnerable software versions
Windows Releases
Platform
Version
Windows 11
24H2 (arm64, x64)
KB5066835
25H2 (arm64, x64)
KB5066835
Windows Server 2022
23H2 Server Core
KB5066780
Windows Server 2025
Server Core
KB5066835
Standard
KB5066835
Common Weakness Enumeration
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59257