SB2025091001 - Privilege escalation in Microsoft Windows SMB
Published: September 10, 2025
Security Bulletin ID
SB2025091001
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Authentication (CVE-ID: CVE-2025-55234)
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error when processing authentication requests in Windows SMB. A remote attacker can relay attacks and gain elevated privileges on the system.
Remediation
Install update from vendor's website.