This indicates an attack attempt to exploit a Directory Traversal vulnerability in SCADA 3S CoDeSys Gateway Server.
The vulnerability is due to insufficient sanitizing of requests messages in the application. A remote attacker can exploit this to upload and execute arbitrary files, via a crafted request.
SCADA 3S CoDeSys Gateway Server prior to 18.104.22.168
System Compromise: Remote attackers can gain control of vulnerable systems.
Currently we are unaware of any vendor supplied patch for this issue.