SB2025091575 - Identity spoofing via X.509 certificate in Openfire
Published: September 15, 2025
Security Bulletin ID
SB2025091575
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Authentication Bypass by Spoofing (CVE-ID: CVE-2025-59154)
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect parsing of CN data within the X.509 client certificate. A remote attacker can supply a specially crafted certificate with embedded CN= inside another attribute value (e.g. OU="CN=admin,"), which will lead to the application extracting "admin" from the certificate and allowing an attacker to impersonate another user.
Remediation
Install update from vendor's website.