SB2025092429 - Remote code execution in Libraesva Email Security Gateway (ESG)

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Main Vulnerability Database SB2025092429

SB2025092429 - Remote code execution in Libraesva Email Security Gateway (ESG)

Published: September 24, 2025

Security Bulletin ID SB2025092429
CSH Severity
Critical
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Critical 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) OS command injection (CVE-ID: CVE-2025-59689)

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red


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.

References