CVE-2018-7812: Schneider Electric Modicom BMXNOR0200H Firmware

High severity, CVSS 7.5. EPSS: 3.7% chance of exploitation in the next 30 days.

An Information Exposure through Discrepancy vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where the web server sends different responses in a way that exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.

Affected products

Published 2018-12-17. Last modified 2026-06-17.