This indicates an attack attempt to exploit a Buffer Overflow vulnerability in Omron CX-Supervisor.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted SCS file. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted SCS file.
CX-Supervisor Versions 3.30 and prior
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.