CVE-2026-6837: Zyxel WAX650S Firmware

High severity, CVSS 7.2. EPSS: 1.5% chance of exploitation in the next 30 days.

A post-authentication command injection vulnerability in the "export-cgi" CGI program in Zyxel WAX650S firmware versions through 7.10(ABRM.4)C0 could allow an authenticated attacker with administrator privileges to execute OS commands on an affected device.

Affected products

• Zyxel WAX650S Firmware: up to and including 7.10(ABRM.4)C0

Published 2026-08-04. Last modified 2026-08-05.