Vulnerability Description
Improper validation of specified type of input in Windows Local Session Manager (LSM) allows an authorized attacker to deny service over a network.
CVSS Score
6.5
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 11 24H2 | < 10.0.26100.6899 |
| Microsoft | Windows 11 25H2 | < 10.0.26200.6899 |
| Microsoft | Windows Server 2022 23H2 | < 10.0.25398.1913 |
| Microsoft | Windows Server 2025 | <= 10.0.26100.6899 |
Related Weaknesses (CWE)
References
FAQ
What is CVE-2025-59257?
CVE-2025-59257 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Improper validation of specified type of input in Windows Local Session Manager (LSM) allows an authorized attacker to deny service over a network.
How severe is CVE-2025-59257?
CVE-2025-59257 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-59257?
Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 11 24H2, Microsoft Windows 11 25H2, Microsoft Windows Server 2022 23H2, Microsoft Windows Server 2025.