CVE-2018-20334: ASUS Asuswrt

Critical severity, CVSS 9.8. EPSS: 3.8% chance of exploitation in the next 30 days.

An issue was discovered in ASUSWRT 3.0.0.4.384.20308. When processing the /start_apply.htm POST data, there is a command injection issue via shell metacharacters in the fb_email parameter. By using this issue, an attacker can control the router and get shell.

Affected products

• ASUS Asuswrt: version 3.0.0.4.384.20308 only

Published 2020-03-20. Last modified 2026-06-17.