CVE-2020-7536

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

A CWE-754:Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M340 CPUs (BMXP34* versions prior to V3.30) Modicon M340 Communication Ethernet modules (BMXNOE0100 (H) versions prior to V3.4 BMXNOE0110 (H) versions prior to V6.6 BMXNOR0200H all versions), that could cause the device to be unreachable when modifying network parameters over SNMP.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-754

Affected software

No affected versions have been published.

Timeline

Published
Dec 11, 2020
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2020

CVE-2020-75377.5A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Legacy Controllers ModicCVE-2020-75387.5A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in PLC Simulator on EcoStruxureª Control Expert (now UnCVE-2020-75397.5A CWE-754 Improper Check for Unusual or Exceptional Conditions vulnerability exists in the Web Server on Modicon M340, Legacy Offers ModiconCVE-2020-75409.8A CWE-306: Missing Authentication for Critical Function vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon QuantuCVE-2020-75415.3A CWE-425: Direct Request ('Forced Browsing') vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and ModiCVE-2020-75427.5A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Legacy Controllers ModicCVE-2020-75437.5A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Legacy Controllers ModicCVE-2020-75447.8A CWE-269 Improper Privilege Management vulnerability exists in EcoStruxureª Operator Terminal Expert runtime (Vijeo XD) that could cause prCVE-2020-75457.2A CWE-284:Improper Access Control vulnerability exists in EcoStruxureª and SmartStruxureª Power Monitoring and SCADA Software (see security CVE-2020-75465.4A CWE-79: Improper Neutralization of Input During Web Page Generation vulnerability exists in EcoStruxureª and SmartStruxureª Power MonitoriCVE-2020-75478.8A CWE-284: Improper Access Control vulnerability exists in EcoStruxureª and SmartStruxureª Power Monitoring and SCADA Software (see securityCVE-2020-75489.8A CWE-330 - Use of Insufficiently Random Values vulnerability exists in Smartlink, PowerTag, and Wiser Series Gateways (see security notific