A vulnerability classified as critical was found in Totolink A8000RU 7.1cu.643_b20200521 . This vulnerability affects the function setPasswordCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface . Such manipulation of the argument admpass leads to os command injection. This vulnerability is documented as CVE-2026-9476 . The attack can be executed remotely. Additionally, an exploit exists.