CVE-2025-26651: Windows Local Session Manager (LSM) Denial of Service Vulnerability

6.5 CVSS

Description

Exposed dangerous method or function in Windows Local Session Manager (LSM) allows an authorized attacker to deny service over a network.

Classification

CVE ID: CVE-2025-26651

CVSS Base Severity: MEDIUM

CVSS Base Score: 6.5

CVSS Vector: 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

Problem Types

CWE-749: Exposed Dangerous Method or Function

Affected Products

Vendor: Microsoft, Microsoft, Microsoft, Microsoft, Microsoft, Microsoft, Microsoft, Microsoft

Product: Windows Server 2022, Windows 11 version 22H2, Windows Server 2025 (Server Core installation), Windows 11 version 22H3, Windows 11 Version 23H2, Windows Server 2022, 23H2 Edition (Server Core installation), Windows 11 Version 24H2, Windows Server 2025

Exploit Prediction Scoring System (EPSS)

EPSS Score: 2.48% (probability of being exploited)

EPSS Percentile: 84.39% (scored less or equal to compared to others)

EPSS Date: 2025-04-18 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-26651
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26651

Timeline