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CVE-2025-53809
Published: Sep 9, 2025
Modified: Feb 20, 2026
PUBLISHED
CVSS v3.1
6.5
MEDIUM
Description
Improper input validation in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network.
| Vendor | Product | Versions |
|---|---|---|
Microsoft | Windows 11 Version 24H2 | affected 10.0.26100.0 - < 10.0.26100.6584 |
Microsoft | Windows Server 2025 | affected 10.0.26100.0 - < 10.0.26100.6584 |
Microsoft | Windows Server 2025 (Server Core installation) | affected 10.0.26100.0 - < 10.0.26100.6584 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
References
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