A vulnerability classified as critical was found in Totolink A8000RU 7.1cu.643_b20200521. Affected is the function setAppFilterCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument enable results in os command injection.

This vulnerability is cataloged as CVE-2026-7823. The attack may be launched remotely. Furthermore, there is an exploit available.