A vulnerability was found in Totolink A8000RU 7.1cu.643_b20200521 . It has been declared as critical . The affected element is the function setTelnetCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler . Such manipulation of the argument telnet_enabled leads to os command injection. This vulnerability is referenced as CVE-2026-7152 . It is possible to launch the attack remotely. Furthermore, an exploit is available.