A vulnerability in Sierra Wireless AirLink GX400 GX440 ES440 and LS300 routers with firmware before 4.4.7 and GX450 ES450 RV50 RV50X MP70 and MP70E routers with firmware before 4.9.3 could allow an unauthenticated remote attacker to execute arbitrary code and gain full control of an affected system including issuing commands with root privileges.