CVE-2026-7140 | Totolink A8000RU 7.1cu.643_b20200521 CGI /cgi-bin/cstecgi.cgi CsteSystem HTTP os command injection

A vulnerability categorized as critical has been discovered in Totolink A8000RU 7.1cu.643_b20200521. Impacted is the function CsteSystem of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument HTTP leads to os command injection.

This vulnerability is listed as CVE-2026-7140. The attack may be performed from remote. In addition, an exploit is available.