CVE-2026-78327: SonicWall Network Security Manager Nsm

Critical severity, CVSS 9.1. EPSS: 1.6% chance of exploitation in the next 30 days.

An Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in the SonicWall Network Security Manager (NSM) On-Prem Management interface allows an authenticated attacker with SuperAdmin privileges to inject arbitrary commands that are executed on the underlying host, resulting in remote code execution.

Affected products

• SonicWall Network Security Manager Nsm: up to and including 4.3.0

Published 2026-09-04. Last modified 2026-09-08.