SB2025092429 - Remote code execution in Libraesva Email Security Gateway (ESG)
Published: September 24, 2025
Security Bulletin ID
SB2025092429
Severity
Critical
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) OS command injection (CVE-ID: CVE-2025-59689)
The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation when handling archives in email attachments. A remote attacker can send a specially crafted email to the affected system and execute arbitrary OS commands.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Note, the vulnerability is being actively exploited in the wild.
Remediation
Install update from vendor's website.