common.c in infosvr in ASUS WRT firmware 3.0.0.4.376_1071 3.0.0.376.2524-g0013f52 and other versions as used in RT-AC66U RT-N66U and other routers does not properly check the MAC address for a request which allows remote attackers to bypass authentication and execute arbitrary commands via a NET_CMD_ID_MANU_CMD packet to UDP port 9999. NOTE: this issue was incorrectly mapped to CVE-2014-10000 but that ID is invalid due to its use as an example of the 2014 CVE ID syntax change.