CVE-2022-30525
Zyxel Multiple Firewalls OS Command Injection Vulnerability
Zyxel · Multiple Firewalls
Vulnerability details
A command injection vulnerability in the CGI program of some Zyxel firewall versions could allow an attacker to modify specific files and then execute some OS commands on a vulnerable device.
Added to CISA KEV: 2022-05-16
Ransomware campaign use: Unknown
CISA due date: 2022-06-06
Defensive guidance from CISA
Apply updates per vendor instructions.
This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.
Source catalog date: 2026-11-06T19:44:45.1797Z · Last retrieved: 2026-11-06 21:02:26 UTC