Denial of Service Vulnerability in Modicon Controllers by Schneider Electric
CVE-2020-7543

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

Summary

A vulnerability exists within Modicon controllers produced by Schneider Electric that can lead to a denial of service condition. This occurs when a specially crafted Read Physical Memory request is sent over the Modbus protocol to the affected controllers. Such exploitation may disrupt the regular operations of the devices, posing a risk to the stability and security of the control system. It is critical for users of Modicon M580, M340, Quantum, and Premium controllers to update their systems and apply necessary mitigations as per the latest security advisories.

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

.