CVE-2020-7536
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductSchneider-electric Modicon M340 Bmxp341000 Firmware
PublishedDec 11, 2020
First seenDec 11, 2020
Weakness typeCWE-754CWE-754
How to fix
Update
- schneider-electric modicon_m340_bmxp341000_firmware3.30 or later
- schneider-electric modicon_m340_bmxp342000_firmware3.30 or later
- schneider-electric modicon_m340_bmxp3420102_firmware3.30 or later
- schneider-electric modicon_m340_bmxp3420102cl_firmware3.30 or later
- schneider-electric modicon_m340_bmxp342020_firmware3.30 or later
- schneider-electric modicon_m340_bmxp3420302_firmware3.30 or later
- schneider-electric modicon_m340_bmxp3420302cl_firmware3.30 or later
- schneider-electric bmxnoe0100_firmware3.4 or later
- schneider-electric bmxnoe0110_firmware6.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| schneider-electric modicon_m340_bmxp341000_firmware | v < 3.30 | 3.30 |
| schneider-electric modicon_m340_bmxp342000_firmware | v < 3.30 | 3.30 |
| schneider-electric modicon_m340_bmxp3420102_firmware | v < 3.30 | 3.30 |
| schneider-electric modicon_m340_bmxp3420102cl_firmware | v < 3.30 | 3.30 |
| schneider-electric modicon_m340_bmxp342020_firmware | v < 3.30 | 3.30 |
| schneider-electric modicon_m340_bmxp3420302_firmware | v < 3.30 | 3.30 |
| schneider-electric modicon_m340_bmxp3420302cl_firmware | v < 3.30 | 3.30 |
| schneider-electric bmxnoe0100_firmware | v < 3.4 | 3.4 |
| schneider-electric bmxnoe0110_firmware | v < 6.6 | 6.6 |
| schneider-electric bmxnor0200h_firmware | No range specified | — |
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