CVE-2018-7831
8.8 · HIGHOverview
CVE-2018-7831 is a high-severity vulnerability affecting schneider-electric modicom_m340_firmware. It was published on November 30, 2018 and has a CVSS 3.0 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.0 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
An Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 allowing an attacker to send a specially crafted URL to a currently authenticated web server user to execute a password change on the web server.
Remediation
Check the references section for vendor advisories and patches from schneider-electric. Update modicom_m340_firmware to the latest patched version. 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.
Affected Products
| Vendor | Product | Versions | Status |
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Frequently Asked Questions
What is CVE-2018-7831?
CVE-2018-7831 is a high-severity vulnerability affecting schneider-electric modicom_m340_firmware. It was published on November 30, 2018 and has a CVSS 3.0 base score of 8.8 (HIGH).
How severe is CVE-2018-7831?
This vulnerability has a CVSS 3.0 base score of 8.8, 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-2018-7831?
Check the references section for vendor advisories and patches from schneider-electric. Update modicom_m340_firmware to the latest patched version. 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-2018-7831?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-7831 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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