Vulnerability · Published Apr 8, 2025 · Assigned by microsoft
CVE-2025-26651Windows Local Session Manager (LSM) Denial of Service Vulnerability
Medium 6.5
In plain English
A medium-severity security flaw in Windows 11 version 22H2 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.6% (higher than 85% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)2.6%top 14.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Exposed dangerous method or function in Windows Local Session Manager (LSM) allows an authorized attacker to deny service over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 – before 10.0.22621.5189 |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0 – before 10.0.22631.5189 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 – before 10.0.22631.5189 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – before 10.0.26100.3775 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – before 10.0.20348.3453 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 – before 10.0.25398.1551 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – before 10.0.26100.3775 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – before 10.0.26100.3775 |
Weakness: CWE-749 · 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
References
- Windows Local Session Manager (LSM) Denial of Service Vulnerability vendor-advisory, patch