A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists that could cause a Denial of Service of the RTU when receiving a specially crafted request over Modbus and the RTU is configured as a Modbus server. Affected Products: SCADAPack 312E 313E 314E 330E 333E 334E 337E 350E and 357E RTUs with firmware V8.18.1 and prior