Improper Condition Check Vulnerability in Modicon Controllers by Schneider Electric
CVE-2020-7542

7.5HIGH

Key Information:

Vendor

Schneider Electric
Status
Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum & Modicon Premium (see Security Notifications For Affected Versions)
Vendor
CVE Published:
11 December 2020

What is CVE-2020-7542?

A vulnerability exists in Schneider Electric's Modicon controllers, including models M580, M340, Quantum, and Premium, due to inadequate checks for exceptional conditions. When an attacker sends a specially crafted Read Physical Memory request over the Modbus protocol, it may lead to a denial of service, disrupting operations and potentially impacting the availability of the affected controllers.

Affected Version(s)

Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum & Modicon Premium (see security notifications for affected ) Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum & Modicon Premium (see security notifications for affected versions)

References

https://www.se.com/ww/en/download/document/SEVD-2020-343-08/
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.