Denial of Service Vulnerability in Modicon Controllers via Specially Crafted Read Physical Memory Request

Denial of Service Vulnerability in Modicon Controllers via Specially Crafted Read Physical Memory Request

CVE-2020-7537 · HIGH Severity

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

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.

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