This indicates an attack attempt to exploit a Remote Code Execution vulnerability in HPE Integrated Lights-out 4.
The vulnerability is due to a lack of input validation in the application when handling a crafted HTTP request. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a HTTP request.
HPE Integrated Lights-out 4 (iLO 4) version prior to 2.53
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.