NEC Corporation Aterm WX1500HP Ver.1.4.2 and earlier and WX3600HP Ver.1.5.3 and earlier allows a attacker to execute arbitrary OS commands via the network.
The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.