CVE-2025-59257CWE-1287

CVE-2025-59257

Medium · published October 14, 2025

CVSS v3.1
6.5
EPSS
2%
Percentile
74.1
In the wild
Unconfirmed
What it is

Improper validation of specified type of input in Windows Local Session Manager (LSM) allows an authorized attacker to deny service over a network.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01501 · 74.1th percentile
Weakness
CWE-1287 · Improper Validation of Specified Type of Input
Published
2025-10-14T21:16Z
Affected products (4)
ProductVersionsFixed in
microsoft/windows_11_24h2< 10.0.26100.689910.0.26100.6899
microsoft/windows_11_25h2< 10.0.26200.689910.0.26200.6899
microsoft/windows_server_2022_23h2< 10.0.25398.191310.0.25398.1913
microsoft/windows_server_2025≤ 10.0.26100.6899—
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59257 · [email protected]
EPSS history
Timeline
  • 14 OCT 17:00Z
    Windows Local Session Manager (LSM) Denial of Service Vulnerability
    cvelistv5