Product:
Windows Local Security Authority Subsystem Service
Summary
Improper input validation in Windows Local Security Authority Subsystem Service allows an authorized attacker to deny service over a network. This vulnerability can lead to significant disruptions in service availability. Attackers with low privileges can exploit this flaw, making it a concerning issue for network security.
Details
| Severity | Base Score | CVE |
|---|---|---|
| MEDIUM | 6.5 | CVE-2025-53809 |
Exploitation
To exploit this vulnerability, an attacker must have authorized access to the network. By sending specially crafted requests to the Windows Local Security Authority Subsystem Service, the attacker can trigger the improper input validation, resulting in a denial of service. This can effectively disrupt the service for legitimate users.
Affected Products
- Windows Local Security Authority Subsystem Service: Vulnerable to denial of service due to improper input validation.
Mitigation
To mitigate this vulnerability, it is recommended to apply the latest security updates provided by Microsoft. Regularly monitoring network traffic and implementing strict access controls can also help reduce the risk of exploitation. Organizations should ensure that only authorized users have access to sensitive services.