CVE-2019-6851: Schneider Electric Modicon m340 Firmware

High severity, CVSS 7.5. EPSS: 29.9% chance of exploitation in the next 30 days.

A CWE-538: File and Directory Information Exposure vulnerability exists in Modicon M580, Modicon M340, Modicon Premium , Modicon Quantum (all firmware versions), which could cause the disclosure of information from the controller when using TFTP protocol.

Affected products

Published 2019-10-29. Last modified 2026-06-17.