PT-2025-36832 · Microsoft · Local Security Authority Subsystem Service+1

Skelsec + 1 · Published 2025-09-09 · Updated 2025-09-09 · CVE-2025-53809

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:N/AC:L/Au:S/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions: Windows Local Security Authority Subsystem Service (LSASS) (affected versions not specified)

Description: Improper input validation in the Windows Local Security Authority Subsystem Service (LSASS) can allow an authorized attacker to cause a denial of service over a network. This issue allows attackers to affect the system.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2025-11041

CVE-2025-53809

Affected Products

Windows

Local Security Authority Subsystem Service

References · 7

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53809 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-53809 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-53809 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-53809 · Security Note
• https://bdu.fstec.ru/vul/2025-11041 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-53809 · Security Note
• https://twitter.com/CVEnew/status/1965509666487894523 · Twitter Post