CVE-2020-5756: Grandstream GWN7000 Firmware

High severity, CVSS 8.8. EPSS: 2.5% chance of exploitation in the next 30 days.

Grandstream GWN7000 firmware version 1.0.9.4 and below allows authenticated remote users to modify the system's crontab via undocumented API. An attacker can use this functionality to execute arbitrary OS commands on the router.

Affected products

• Grandstream GWN7000 Firmware: up to and including 1.0.9.4

Published 2020-07-17. Last modified 2026-06-17.