This indicates an attack attempt to exploit a Remote Command Injection vulnerability in Trend Micro Deep Discovery Inspector.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted HTTP request. An attacker can exploit this by injecting command onto a request to execute arbitrary command within the context of the application.
Trend Micro Deep Discovery Inspector 3.82 and prior
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.