goform/WClientMACList on Cisco EPC3928 devices allows remote attackers to cause a denial of service (device crash) via a long h_sortWireless parameter, related to a "Gateway Client List Denial of Service" issue, aka Bug ID CSCux24948.
https://www.exploit-db.com/exploits/39904/
http://www.securityfocus.com/bid/91547
http://www.securityfocus.com/archive/1/538627/100/0/threaded