#VU118631 Download of code without integrity check in SonicWall On-premise Email Security (ES) - CVE-2025-40604
Published: November 20, 2025
Vulnerability identifier: #VU118631
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-40604
CWE-ID: CWE-494
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
SonicWall On-premise Email Security (ES)
SonicWall On-premise Email Security (ES)
Software vendor:
SonicWall
SonicWall
Description
The vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to software does not perform software integrity check when downloading updates. A remote user with VMDK or datastore access can modify system files and gain persistent arbitrary code execution.
Remediation
Install updates from vendor's website.