CVE-2025-59257
Medium
Description
Improper validation of specified type of input in Windows Local Session Manager (LSM) allows an authorized attacker to deny service over a network.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Microsoft Windows
PublishedOct 14, 2025
First seenOct 14, 2025
Weakness typeCWE-1287CWE-1287
How to fix
Update
- microsoft windows_11_24h210.0.26100.6899 or later
- microsoft windows_11_25h210.0.26200.6899 or later
- microsoft windows_server_2022_23h210.0.25398.1913 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft windows_11_24h2 | v < 10.0.26100.6899 | 10.0.26100.6899 |
| microsoft windows_11_25h2 | v < 10.0.26200.6899 | 10.0.26200.6899 |
| microsoft windows_server_2022_23h2 | v < 10.0.25398.1913 | 10.0.25398.1913 |
| microsoft windows_server_2025 | v ≤ 10.0.26100.6899 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.