CVE-2020-28214: Schneider Electric Modicon m221 Firmware

Medium severity, CVSS 5.5. EPSS: 0.7% chance of exploitation in the next 30 days.

A CWE-760: Use of a One-Way Hash with a Predictable Salt vulnerability exists in Modicon M221 (all references, all versions), that could allow an attacker to pre-compute the hash value using dictionary attack technique such as rainbow tables, effectively disabling the protection that an unpredictable salt would provide.

Affected products

• Schneider Electric Modicon m221 Firmware: any version

Published 2020-12-11. Last modified 2026-06-17.