This indicates an attack attempt against a remote Code Execution vulnerability in D-Link devices.
The vulnerability is caused by insufficient check on files upload from clients and client requests. A remote attacker may be able to exploit those to execute arbitrary code within the context of the application.
D-Link DSP-W110 (Rev A) v1.05b01
System Compromise: Remote attackers can gain control of vulnerable systems.
Currently we are unaware of any vendor supplied patch for this issue.