CVE-2025-53809
Medium
Description
Improper input validation in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Microsoft Windows
PublishedSep 9, 2025
First seenSep 9, 2025
Weakness typeCWE-20Improper input validation
How to fix
Update
- microsoft windows_11_24h210.0.26100.6508 or later
- microsoft windows_server_202510.0.26100.6508 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft windows_11_24h2 | v < 10.0.26100.6508 | 10.0.26100.6508 |
| microsoft windows_server_2025 | v < 10.0.26100.6508 | 10.0.26100.6508 |
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