This indicates an attack attempt to exploit a Memory Corruption vulnerability in ESnet iPerf3.
The vulnerability is due to an error when the vulnerable software handles a maliciously 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.
ESnet iPerf3 version 3.0.11 or prior
ESnet iPerf3 version 3.1.2 or prior
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most upgrade or patch to version 3.1.3 or 2.0.12 or above from the vendor.