An authenticated OS command injection vulnerability exists in Netgear routers (tested on the DGN2200B model) firmware versions 1.0.0.36 and prior via the pppoe.cgi endpoint. A remote attacker with valid credentials can execute arbitrary commands via crafted input to the pppoeusername parameter. This flaw allows full compromise of the device and may persist across reboots unless configuration is restored.
NETGEAR DGN2200v1 devices before v1.0.0.58 are affected by command injection.