CVE-2020-7567: Schneider Electric Modicon m221 Firmware

Medium severity, CVSS 5.7. EPSS: 0.2% chance of exploitation in the next 30 days.

A CWE-311: Missing Encryption of Sensitive Data vulnerability exists in Modicon M221 (all references, all versions) that could allow the attacker to find the password hash when the attacker has captured the traffic between EcoStruxure Machine - Basic software and Modicon M221 controller and broke the encryption keys.

Affected products

• Schneider Electric Modicon m221 Firmware: affected versions not specified

Published 2020-11-19. Last modified 2026-06-17.