CVE-2020-7566 (GCVE-0-2020-7566)
Vulnerability from cvelistv5 – Published: 2020-11-19 21:10 – Updated: 2026-05-29 18:27
VLAI
EPSS
VEX
Summary
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.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-29 18:26 UTC
CWE
- CWE-334 - Small Space of Random ValuesÊ
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.se.com/ww/en/download/document/SEVD-2… | x_refsource_MISC |
| https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| n/a | Modicon M221, all references, all versions |
Affected:
Modicon M221, all references, all versions
|
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