OS command injection in Email Security Gateway - CVE-2025-59689
Published: September 24, 2025
Vulnerability identifier: #VU116074
CSH Severity: Critical
CVSS v4.0: 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
CVE-ID: CVE-2025-59689
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: Libraesva
Affected software:
Email Security Gateway
Email Security Gateway
Detailed vulnerability description
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.
How to mitigate CVE-2025-59689
Install updates from vendor's website.