Back in January 2013, researchers from application security services firm DefenseCode unearthed a remote root access vulnerability in the default installation of some Cisco Linksys (now Belkin) routers.

The flaw was actually found in Broadcom’s UPnP implementation used in popular routers, and ultimately the researchers extended the list of vulnerable routers to encompass devices manufactured by the likes of ASUS, D-Link, Zyxel, US Robotics, TP-Link, Netgear, and others.