CVE-2020-7565

7.3 highEPSS 0.3%

A CWE-326: Inadequate Encryption Strength vulnerability exists in Modicon M221 (all references, all versions) that could allow the attacker to break the encryption key when the attacker has captured the traffic between EcoStruxure Machine - Basic software and Modicon M221 controller.

Severity

CVSS 3.1

7.3 high

CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 22% of CVEs (scores of 2026-10-31)
CWE: CWE-326
Published: 2020-11-19
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

schneider-electric:modicon_m221_firmware

References

https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04
https://www.se.com/ww/en/download/document/SEVD-2020-315-05/
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04
https://www.se.com/ww/en/download/document/SEVD-2020-315-05/

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