A vulnerability classified as critical was found in Totolink A8000RU 7.1cu.643_b20200521 . Impacted is the function setWiFiWpsCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface . Such manipulation of the argument wscDisabled leads to os command injection. This vulnerability is traded as CVE-2026-9434 . The attack may be launched remotely. Furthermore, there is an exploit available.