This indicates an attack attempt against a Buffer Overflow vulnerability in Advantech WebOP Designer.
The vulnerability is caused by an error when the vulnerable application handles a malformed PM3 file. A remote attacker may be able to exploit this to execute arbitrary code on vulnerable systems via a crafted PM3 file.
Advantech WebOP Designer version 220.127.116.11 and the prior
System Compromise: Remote attackers can gain control of vulnerable systems.
Currently we are unaware of any vendor supplied patch for this issue.