This indicates an attack attempt to exploit a Buffer Overflow vulnerability in HP Operations Agent.
The vulnerability is due to an improper boundary check condition in the application when handling requests with certain opcodes.
A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted request.
HP OpenView Performance Agent 5.x and prior
HP Operations Agent 8.6
HP Operations Agent prior to 11.03.12
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply patch available from the website.