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Status published
Medium
CVE-2025-53809
Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability
Vulnerability Description
Improper input validation in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
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Affected Vendor
Microsoft
View all reports →Affected Software
Windows 11 Version 24H2, Windows Server 2025, Windows Server 2025 (Server Core installation)
Vulnerable Versions:
10.0.26100.0
Timeline
Official Publish:
September 9th, 2025
Last Modified:
February 20th, 2026
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
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