This indicats an attack attempt to exploit an Information Disclosure Vulnerability in HP Intelligent Management Center
A remote, authenticated attacker can exploit this vulnerability by sending a request message with a specially crafted serialized object. Successful exploitation results in the execution of arbitrary code under the context of the SYSTEM or root user.
HP Intelligent Management Center
System Compromise: Remote attackers can gain control of vulnerable systems.
HP has not released an advisory or patch regarding this vulnerability