Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability
view advisory published 2025-09-09
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
01
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-53809US | — | — | ||
Improper input validation in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network. | ||||
02
references
External citations — patches, advisories, analysis.
- CVE-2025-53809 Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability - CSAFself
- CVE-2025-53809 Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability - HTMLself
- Microsoft Support Lifecycleexternal
- Common Vulnerability Scoring Systemexternal
- Microsoft Exploitability Indexexternal
03
remediations (4)
- FixedWindows 11 Version 24H2 for ARM64-based Systems
10.0.26100.6584:Security Update:https://support.microsoft.com/help/5065426
https://support.microsoft.com/help/5065426 - FixedWindows 11 Version 24H2 for x64-based Systems
10.0.26100.6584:Security Update:https://support.microsoft.com/help/5065426
https://support.microsoft.com/help/5065426 - FixedWindows Server 2025
10.0.26100.6584:Security Update:https://support.microsoft.com/help/5065426
https://support.microsoft.com/help/5065426 - FixedWindows Server 2025 (Server Core installation)
10.0.26100.6584:Security Update:https://support.microsoft.com/help/5065426
https://support.microsoft.com/help/5065426
scry
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