CVE-2020-7543 Information

Description

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580 Modicon M340 Legacy Controllers Modicon Quantum & Modicon Premium (see security notifications for affected versions) that could cause denial of service when a specially crafted Read Physical Memory request over Modbus is sent to the controller.

CVSS Vector

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

Reference

https://www.se.com/ww/en/download/document/SEVD-2020-343-08/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5