CVE-2020-7566

7.3 HIGH
Published: November 19, 2020 Modified: May 29, 2026
View on NVD

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04
Source: cybersecurity@se.com
Third Party Advisory US Government Resource
https://www.se.com/ww/en/download/document/SEVD-2020-315-05/
Source: cybersecurity@se.com
Vendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory US Government Resource
https://www.se.com/ww/en/download/document/SEVD-2020-315-05/
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.3 / 10.0
EPSS (Exploit Probability)
0.3%
21th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

schneider-electric