CVE-2026-5691: Totolink a7100ru

High severity, CVSS 7.3. EPSS: 2.1% chance of exploitation in the next 30 days.

A vulnerability has been found in Totolink A7100RU 7.4cu.2313_b20191024. This affects the function setFirewallType of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument firewallType leads to os command injection. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used.

Affected products

• Totolink a7100ru: version 7.4cu.2313_b20191024 only

Published 2026-04-06. Last modified 2026-07-24.