A vulnerability was found in Totolink A8000RU 7.1cu.643_b20200521 . It has been declared as critical . The impacted element is the function setScheduleCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface . Executing a manipulation of the argument mode can lead to os command injection. This vulnerability is registered as CVE-2026-9388 . It is possible to launch the attack remotely. Furthermore, an exploit is available.