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Vulnerability record · CVE-2020-7536 · published 11 December 2020

CVE-2020-7536: Schneider-electric modicon m340 bmxp341000 firmware vulnerability

Schneider Electric · Modicon M340 Bmxp341000 Firmware

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.

7.5 CVSS 3.1 High EPSS 1.2% · top 33.5% CWE-754 · CWE-754
7.5CVSS 3.1 base score, v2 7.8
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
10Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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.

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

Affected products

10 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://security.cse.iitk.ac.in/responsible-disclosure Vendor Advisory
https://www.se.com/ww/en/download/document/SEVD-2020-343-07/ Vendor Advisory
https://security.cse.iitk.ac.in/responsible-disclosure Vendor Advisory
https://www.se.com/ww/en/download/document/SEVD-2020-343-07/ Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-7536), CISA KEV, FIRST EPSS (scores of 2026-10-10). This page is refreshed as NVD updates the record.