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CVE-2018-7789

7.5 · HIGH

An Improper Check for Unusual or Exceptional Conditions vulnerability exists in Schneider Electric's Modicon M221 product (all references, all versions prior to firmware V1.6.2.0).

Published Aug 29, 2018CWE-754EPSS 2.80%

Overview

CVE-2018-7789 is a high-severity vulnerability. It was published on August 29, 2018 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

An Improper Check for Unusual or Exceptional Conditions vulnerability exists in Schneider Electric's Modicon M221 product (all references, all versions prior to firmware V1.6.2.0). The vulnerability allows unauthorized users to remotely reboot Modicon M221 using crafted programing protocol frames.

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.securityfocus.com/bid/105171Refics-cert.us-cert.gov/advisories/ICSA-18-240-02Refwww.schneider-electric.com/en/download/document/SEVD-2018-233-01/Refwww.securityfocus.com/bid/105171Refics-cert.us-cert.gov/advisories/ICSA-18-240-02Refwww.schneider-electric.com/en/download/document/SEVD-2018-233-01/

How CyberStrike helps

Frequently asked questions

What is CVE-2018-7789?

CVE-2018-7789 is a high-severity vulnerability. It was published on August 29, 2018 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2018-7789?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-7789?

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-2018-7789?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-7789 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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