web_shell_cmd.gch on ZTE F460 and F660 cable modems allows remote attackers to obtain administrative access via sendcmd requests, as demonstrated by using "set TelnetCfg" commands to enable a TELNET service with specified credentials.Referenceshttp://www.myxzy.com/post-411.htmlhttps://community.rapid7.com/community/infosec/blog/2014/03/03/disclosure-r7-2013-18-zte-f460-and-zte-f660-webshellcmdgch-backdoorhttp://www.kb.cert.org/vuls/id/600724
