CVE-2026-5677: Totolink a7100ru

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

A security flaw has been discovered in Totolink A7100RU 7.4cu.2313_b20191024. Impacted is the function CsteSystem of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument resetFlags results in os command injection. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks.

Affected products

• Totolink a7100ru: version 7.4cu.2313_b20191024 only

Published 2026-04-06. Last modified 2026-07-20.