CVEvulnerability

CVE-2020-7566

7.3 HIGH Published 2020-11-19 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-11-19
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.3 HIGH — CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.1 HIGH — CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:A/AC:M/Au:N/C:P/I:P/A:N
Weaknesses
CWE-334

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.

Affected configurations

• schneider-electric modicon m221 firmware

Related

Weakness · CWE (1)

  • CWE-334 Small Space of Random Values weakness

References