Cross-site scripting (XSS) vulnerability in Advanced_Wireless_Content.asp in ASUS RT-AC68U and other RT series routers with firmware before 3.0.0.4.374.5047 allows remote attackers to inject arbitrary web script or HTML via the current_page parameter to apply.cgi.
https://support.t-mobile.com/docs/DOC-21994
http://www.asus.com/Networking/RTAC68U/HelpDesk_Download/
http://support.asus.com/download.aspx?m=RT-N66U+%28VER.B1%29