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CVE-2018-7842

9.8 · CRITICAL

A CWE-290: Authentication Bypass by Spoofing vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause an elevation of privilege…

Published May 22, 2019CWE-290EPSS 35.04%

Overview

CVE-2018-7842 is a critical-severity vulnerability. It was published on May 22, 2019 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A CWE-290: Authentication Bypass by Spoofing vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause an elevation of privilege by conducting a brute force attack on Modbus parameters sent to the controller.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.schneider-electric.com/en/download/document/SEVD-2019-134-11/Refwww.talosintelligence.com/vulnerability_reports/TALOS-2018-0741Refwww.schneider-electric.com/en/download/document/SEVD-2019-134-11/Refwww.talosintelligence.com/vulnerability_reports/TALOS-2018-0741

How CyberStrike helps

Frequently asked questions

What is CVE-2018-7842?

CVE-2018-7842 is a critical-severity vulnerability. It was published on May 22, 2019 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2018-7842?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-7842?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-7842?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-7842 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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