you are close.
this PLC is old and full of known documented vulnerabilities. however this is not the issue.
Someone ever thought what is the operating system of this PLC? did you know that this PLC is running VxWorks operating system? Schneider electric just recently published this information, due to the fact that 11 different vulnerabilities were discovered to this operating system. The problem with the Momentum is more sever, as the Momentum family reached it end of sale and Schneider electric is not releasing security patches for it. as a result the only way to mitigate these vulnerabilities would be with external tools like our IPS
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