High severity7.5NVD Advisory· Published Dec 11, 2020· Updated Jun 17, 2026
CVE-2020-7539
CVE-2020-7539
Description
A CWE-754 Improper Check for Unusual or Exceptional Conditions vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions), that could cause a denial of service vulnerability when a specially crafted packet is sent to the controller over HTTP.
Affected products
23- 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: <3.3
- cpe:2.3:o:schneider-electric:bmxnoe0110_firmware:*:*:*:*:*:*:*:*Range: <6.5
- cpe:2.3:o:schneider-electric:bmxnoc0401_firmware:*:*:*:*:*:*:*:*Range: <2.10
cpe:2.3:o:schneider-electric:tsxp574634_firmware:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:schneider-electric:tsxp574634_firmware:*:*:*:*:*:*:*:*range: <6.1
- cpe:2.3:o:schneider-electric:tsxp575634_firmware:*:*:*:*:*:*:*:*range: <6.1
- cpe:2.3:o:schneider-electric:tsxp576634_firmware:*:*:*:*:*:*:*:*Range: <6.1
- cpe:2.3:o:schneider-electric:tsxety4103_firmware:*:*:*:*:*:*:*:*Range: <6.2
- cpe:2.3:o:schneider-electric:tsxety5103_firmware:*:*:*:*:*:*:*:*Range: <6.4
- cpe:2.3:o:schneider-electric:140cpu65150_firmware:*:*:*:*:*:*:*:*Range: <6.1
- cpe:2.3:o:schneider-electric:140noe77111_firmware:*:*:*:*:*:*:*:*Range: <7.1
- cpe:2.3:o:schneider-electric:140noc78100_firmware:*:*:*:*:*:*:*:*Range: <1.74
- cpe:2.3:o:schneider-electric:140noc78000_firmware:*:*:*:*:*:*:*:*Range: <1.74
- cpe:2.3:o:schneider-electric:140noc77101_firmware:*:*:*:*:*:*:*:*Range: <1.08
Patches
Vulnerability mechanics
References
1- www.se.com/ww/en/download/document/SEVD-2020-343-03/nvdVendor Advisory
News mentions
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