This indicates an attack attempt against a Heap Overflow vulnerability in TwinCAT Scope.
The vulnerability is caused by an error when the vulnerable software handles a malicious "svw" or "wsm" file. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted "svw" or "wsm" file.
TwinCAT Scope 220.127.116.11
System Compromise: Remote attackers can gain control of vulnerable systems.
Currently we are not aware of any vendor supplied patch for this issue.