This indicates an attack attempt to exploit a remote Code Execution vulnerability in D-Link Multiple Router UPnP SOAP Inerface.
The vulnerability is due to insufficient sanitizing of user supplied inputs when the interface handles a crafted SOAP XML. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, by uploading a malicious SOAP XML.
D-Link DIR-300 rev B - firmware 2.14b01
D-Link DIR-600 - firmware 2.16b01
D-Link DIR-645 - firmware 1.04b01
D-Link DIR-845 - firmware 1.01b02
D-Link DIR-865 - firmware 1.05b03
System Compromise: Remote attackers can gain control of vulnerable systems.
Currently we are unaware of any vendor supplied patch for this issue.