VULNERABILITY INTELLIGENCE

CVE-2020-7549

CVSS score7.5 HIGH

EPSS probability1.10%

CISA KEVNot currently listed

Published2020-12-11

Last modified2026-06-17

Description

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions), that could cause denial of HTTP and FTP services when a series of specially crafted requests is sent to the controller over HTTP.