CVE-2026-9435: Totolink a8000ru

Critical severity, CVSS 9.8. EPSS: 3.3% chance of exploitation in the next 30 days.

A vulnerability was detected in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function setQosCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument enable results in os command injection. Remote exploitation of the attack is possible. The exploit is now public and may be used.

Affected products

• Totolink a8000ru: version 7.1cu.643_b20200521 only

Published 2026-05-25. Last modified 2026-07-23.