High severity7.5NVD Advisory· Published Dec 11, 2020· Updated Jun 17, 2026
CVE-2020-7536
CVE-2020-7536
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.
Affected products
13- Modicon/Modicon M340 CPUsdescription
- Range: <V3.30
- Range: <V3.4, <V6.6, all versions
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp341000_firmware:*:*:*:*:*:*:*:*Range: <3.30
cpe:2.3:o:schneider-electric:modicon_m340_bmxp342000_firmware:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp342000_firmware:*:*:*:*:*:*:*:*range: <3.30
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420302_firmware:*:*:*:*:*:*:*:*range: <3.30
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420102_firmware:*:*:*:*:*:*:*:*Range: <3.30
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420102cl_firmware:*:*:*:*:*:*:*:*Range: <3.30
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp342020_firmware:*:*:*:*:*:*:*:*Range: <3.30
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420302cl_firmware:*:*:*:*:*:*:*:*Range: <3.30
- cpe:2.3:o:schneider-electric:bmxnoe0100_firmware:*:*:*:*:*:*:*:*Range: <3.4
- cpe:2.3:o:schneider-electric:bmxnoe0110_firmware:*:*:*:*:*:*:*:*Range: <6.6
- cpe:2.3:o:schneider-electric:bmxnor0200h_firmware:*:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
2- security.cse.iitk.ac.in/responsible-disclosurenvdVendor Advisory
- www.se.com/ww/en/download/document/SEVD-2020-343-07/nvdVendor Advisory
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