This indicates an attack attempt to exploit a Heap Buffer Overflow vulnerability in HP LoadRunner.
This vulnerability is due to an insufficient input validation error for the length of XDR encoded data when the vulnerable software handles a crafted request. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted request.
HP LoadRunner Prior to 11.52
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.