D-Link DNS-320 FW v2.06B01 Revision Ax is affected by command injection in the system_mgr.cgi component, which can lead to remote arbitrary code execution.
https://www.dlink.com/en/security-bulletin/
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10183
https://gist.github.com/WinMin/6f63fd1ae95977e0e2d49bd4b5f00675