Which software versions are affected by CVE-2018-7855?

CVE-2018-7855 affects all versions of Schneider-electric Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium.

What is the severity of CVE-2018-7855?

CVE-2018-7855 has a severity rating of 7.5, which is classified as high.

How can CVE-2018-7855 be exploited?

CVE-2018-7855 can be exploited by sending invalid breakpoint parameters to the affected Modicon controllers over Modbus, leading to a Denial of Service condition.

Are there any references for CVE-2018-7855?

Yes, you can find more information about CVE-2018-7855 at the following references: [Reference 1](https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/), [Reference 2](https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0766), [Reference 3](https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0767).

Vulnerability/
CVE-2018-7855

high

7.5

CWE

754

22/5/2019

3/2/2022

CVE-2018-7855

Q: What is CVE-2018-7855?

CVE-2018-7855 is a vulnerability titled 'A CWE-248 Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium' which could cause a Denial of Service when sending invalid breakpoint parameters to the controller over Modbus.

First published: Wed May 22 2019(Updated: )

A CWE-248 Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause a Denial of Service when sending invalid breakpoint parameters to the controller over Modbus

Credit: cybersecurity@se.com

Affected Software	Affected Version	How to fix
Schneider-electric Modicon Premium Firmware
Schneider-electric Modicon Premium
Schneider-electric Modicon Quantum Firmware
Schneider-electric Modicon Quantum
Schneider-electric Modicon M340 Firmware	<3.10
Schneider-electric Modicon M340
Schneider-electric Modicon M580 Firmware	<2.90
Schneider-electric Modicon M580

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Frequently Asked Questions

What is CVE-2018-7855?
CVE-2018-7855 is a vulnerability titled 'A CWE-248 Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium' which could cause a Denial of Service when sending invalid breakpoint parameters to the controller over Modbus.
Which software versions are affected by CVE-2018-7855?
CVE-2018-7855 affects all versions of Schneider-electric Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium.
What is the severity of CVE-2018-7855?
CVE-2018-7855 has a severity rating of 7.5, which is classified as high.
How can CVE-2018-7855 be exploited?
CVE-2018-7855 can be exploited by sending invalid breakpoint parameters to the affected Modicon controllers over Modbus, leading to a Denial of Service condition.
Are there any references for CVE-2018-7855?
Yes, you can find more information about CVE-2018-7855 at the following references: [Reference 1](https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/), [Reference 2](https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0766), [Reference 3](https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0767).

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