SB2025090984 - Privilege escalation in Microsoft AutoUpdate (MAU)
Published: September 9, 2025
Security Bulletin ID
SB2025090984
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Link following (CVE-ID: CVE-2025-55317)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to an insecure link following issue in Microsoft AutoUpdate (MAU). A local user can use a malicious installer and gain elevated privileges on the target system.
Remediation
Install update from vendor's website.