Zyxel disclosed CVE-2026-6837, a command injection vulnerability in the export-cgi program of WAX650S firmware through version 7.10(ABRM.4)C0 that lets authenticated administrators execute OS commands. The flaw scores 7.2 on CVSS v3.1 and was published August 3, 2026.
An authenticated attacker with administrator privileges could exploit it to execute arbitrary OS commands on the device.
Affected products are limited to one firmware branch.
Enterprise teams running Zyxel WAX650S should treat this as an immediate patching priority given the high impact on device integrity once admin credentials are obtained.
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