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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – < 10.0.26100.6899 | 10.0.26100.6899 |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 – < 10.0.26200.6899 | 10.0.26200.6899 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 – < 10.0.25398.1913 | 10.0.25398.1913 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – < 10.0.26100.6899 | 10.0.26100.6899 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – < 10.0.26100.6899 | 10.0.26100.6899 |
Advisories 3
- WID-SEC-2025-2307 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 25, 2025
- NCSC-2025-0310 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Oct 24, 2025
- MSRC-CVE-2025-59257 Windows Local Session Manager (LSM) Denial of Service Vulnerability Microsoft Security Response Center · Oct 14, 2025
References
- Windows Local Session Manager (LSM) Denial of Service Vulnerability vendor-advisory patch