CVE-2026-4976: Totolink LR350 Firmware

High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days.

A vulnerability was found in Totolink LR350 9.3.5u.6369_B20220309. This vulnerability affects the function setWiFiGuestCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ssid results in buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used.

Affected products

• Totolink LR350 Firmware: version 9.3.5u.6369_b20220309 only

Published 2026-03-27. Last modified 2026-06-17.