CVE-2020-7536

moderate-risk
Published 2020-12-11

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.

Do I need to act?

-
0.48% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (10)

Modicon M340 Bmxp3420102Cl Firmware
Modicon M340 Bmxp3420302Cl Firmware
Bmxnoe0100 Firmware
Bmxnoe0110 Firmware
Bmxnor0200H Firmware

Affected Vendors

Schneider-Electric

References (4)

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 https://security.cse.iitk.ac.in/responsible-disclosure
Vendor Advisory https://www.se.com/ww/en/download/document/SEVD-2020-343-07/
44
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 2/34 · Minimal
Exposure 16/34 · Moderate