Vulnerability · Published Oct 14, 2025 · Assigned by microsoft
CVE-2025-59259Windows Local Session Manager (LSM) Denial of Service Vulnerability
Medium 6.5
In plain English
A medium-severity security flaw in Windows 10 Version 1507 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 75% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)1.5%top 25.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper validation of specified type of input 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 10 Version 1507 | 10.0.10240.0 – before 10.0.10240.21161 |
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 – before 10.0.14393.8519 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – before 10.0.17763.7919 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 – before 10.0.19044.6456 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 – before 10.0.19045.6456 |
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 – before 10.0.22621.6060 |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0 – before 10.0.22631.6060 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 – before 10.0.22631.6060 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – before 10.0.26100.6899 |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 – before 10.0.26200.6899 |
| Microsoft | Windows Server 2012 | 6.2.9200.0 – before 6.2.9200.25722 |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.9200.0 – before 6.2.9200.25722 |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0 – before 6.3.9600.22824 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 – before 6.3.9600.22824 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 – before 10.0.14393.8519 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 – before 10.0.14393.8519 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – before 10.0.17763.7919 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – before 10.0.17763.7919 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – before 10.0.20348.4294 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 – before 10.0.25398.1913 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – before 10.0.26100.6899 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – before 10.0.26100.6899 |
Weakness: CWE-1287 · 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