CVE-2023-31742: Linksys WRT54GL Firmware

High severity, CVSS 7.2. EPSS: 9.1% chance of exploitation in the next 30 days.

There is a command injection vulnerability in the Linksys WRT54GL router with firmware version 4.30.18.006. If an attacker gains web management privileges, they can inject commands into the post request parameters wl_ant, wl_rate, WL_atten_ctl, ttcp_num, ttcp_size in the httpd s Start_EPI() function, thereby gaining shell privileges.

Affected products

• Linksys WRT54GL Firmware: version 4.30.18.006 only

Published 2023-05-22. Last modified 2026-07-09.