CVE-2018-7792: Schneider Electric Modicon m221 Firmware

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

A Permissions, Privileges, and Access Control 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 decode the password using rainbow table.

Affected products

• Schneider Electric Modicon m221 Firmware: before 1.6.2.0 (fixed in 1.6.2.0)

Published 2018-08-29. Last modified 2026-06-17.