On Televes COAXDATA GATEWAY 1Gbps devices doc-wifi-hgw_v1.02.0014 4.20, the backup/restore feature lacks access control, related to ReadFile.cgi and LoadCfgFile.
https://www.tarlogic.com/advisories/Televes_CoaxData_Gateway_es.txt
https://www.tarlogic.com/advisories/Televes_CoaxData_Gateway_en.txt