CVE-2025-40604

Critical · 9.8

CVSS

9.8

EPSS

0.2%

Published

Nov 20, 2025

CISA due date

—

The record

Download of Code Without Integrity Check Vulnerability in the SonicWall Email Security appliance loads root filesystem images without verifying signatures, allowing attackers with VMDK or datastore access to modify system files and gain persistent arbitrary code execution.

Affected packages

Ecosystem	Package	Introduced	Fixed