A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in BMXNOR0200H Ethernet / Serial RTU module (all firmware versions) and Modicon M340 controller (all firmware versions), which could cause denial of service when truncated SNMP packets on port 161/UDP are received by the device.
https://www.schneider-electric.com/en/download/document/SEVD-2019-225-03/
https://www.schneider-electric.com/en/download/document/SEVD-2019-225-02/