Improper Check for Unusual Conditions in Modicon Controllers by Schneider Electric
CVE-2020-7537

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-2020-7537?

A vulnerability exists in certain Modicon Controllers from Schneider Electric, particularly affecting the Modicon M580, M340, Quantum, and Premium series. This issue is classified as improper checking for unusual or exceptional conditions. It allows an attacker to potentially cause a denial of service by sending a specially crafted Read Physical Memory request via Modbus to the controller. This vulnerability raises concerns about the stability and reliability of industrial control systems, necessitating prompt attention to security alerts and patches provided by Schneider Electric.

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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

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