IM
IronMonkey Threat Research

CVE-2020-7566 HIGH

Published: 2020-11-19 | Last Modified: 2026-05-29 | Status: Modified

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.

Additional Descriptions (1)

CWE-334: Se presenta una vulnerabilidad de Espación Pequeño de Valores Aleatorios ??en Modicon M221 (todas las referencias, todas las versiones) que podría permitir al atacante romper las claves de cifrado cuando el atacante ha capturado el tráfico entre EcoStruxure Machine - Software básico y el controlador Modicon M221

CVSS Metrics

Base Score: 7.3 (HIGH)

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

Attack VectorADJACENT_NETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionREQUIRED
ScopeUNCHANGED
Confidentiality ImpactHIGH
Integrity ImpactHIGH
Availability ImpactNONE

Source: [email protected]

Type: Primary

Exploitability Score: 2.1

Impact Score: 5.2

Base Score: 4.3 (MEDIUM)

AV:A/AC:M/Au:N/C:P/I:P/A:N

Access VectorADJACENT_NETWORK
Access ComplexityMEDIUM
AuthenticationNONE
Confidentiality ImpactPARTIAL
Integrity ImpactPARTIAL
Availability ImpactNONE

Source: [email protected]

Type: Primary

Exploitability Score: 5.5

Impact Score: 4.9

Weaknesses

Source Type Description
[email protected] Secondary
en CWE-334

Affected Products

Vendor Product Version Update Type
schneider-electric modicon_m221_firmware - <built-in method update of dict object at 0x7e60ba2a65c0> Operating System

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:schneider-electric:modicon_m221_firmware:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
No cpe:2.3:h:schneider-electric:modicon_m221:-:*:*:*:*:*:*:*

References

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