CVE-2026-6140 | Totolink A7100RU 7.4cu.2313_b20191024 CGI /cgi-bin/cstecgi.cgi UploadFirmwareFile FileName os command injection

A vulnerability has been found in Totolink A7100RU 7.4cu.2313_b20191024 and classified as critical. This impacts the function UploadFirmwareFile of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation of the argument FileName results in os command injection.

This vulnerability was named CVE-2026-6140. The attack may be initiated remotely. In addition, an exploit is available.