This indicates an attack attempt against a Security Bypass vulnerability in Progea Movicon.
The vulnerability is due to a lack of authentication in the application when handling user supplied inputs. A remote attacker can exploit this to bypass security features on the application, leading to other attacks.
Progea Movicon version 18.104.22.1688
Progea Movicon version 11.3
Security Bypass: Remote attackers can bypass security features of vulnerable systems.
Currently we are unaware of any vendor supplied patch or updates available for this issue.