CVE-2019-6819

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists which could cause a possible Denial of Service when specific Modbus frames are sent to the controller in the products: Modicon M340 – firmware versions prior to V3.01, Modicon M580 – firmware versions prior to V2.80, All firmware versions of Modicon Quantum and Modicon Premium.

Source: CVE-2019-6819