DLINK DIR-825 REVB 2.03 devices have an OS command injection vulnerability in the CGl interface apc_client_pin.cgi, which allows remote attackers to execute arbitrary commands via the parameter "wps_pin" passed to the apc_client_pin.cgi binary through a POST request.
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.