System command injection in formDlna in TOTOLINK A3002RU version 1.0.8 allows attackers to execute system commands via the "ftpUser" POST parameter.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2018-5254
https://blog.securityevaluators.com/new-vulnerabilities-in-totolink-a3002ru-d6f42a081154