CVE-2020-7566

CVE-2020-7566

Vendor N/A
Product Modicon M221, all references, all versions
Weakness CWE-334
Published November 19, 2020
Last update May 29, 2026

CVSS base score

What the vulnerability does

01Description

A CWE-334: Small Space of Random Values vulnerability exists in Modicon M221 (all references, all versions) that could allow the attacker to break the encryption keys when the attacker has captured the traffic between EcoStruxure Machine - Basic software and Modicon M221 controller.

Key dates

02Disclosure timeline

November 19, 2020 CVE published
May 29, 2026 Record updated