CVE-2020-7477

CVE-2020-7477

Vendor N/A
Product Modicon Quantum Ethernet Network module and Quantum / Premium COPRO (Quantum Ethernet Network module 140NOE771x1, versions 7.0 and prior, Quantum processors with integrated Ethernet – 140CPU65xxxxx, all versions, Premium processors with integrated Etherne
Weakness CWE-754
Published March 23, 2020
Last update May 28, 2026
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CVSS base score

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What the vulnerability does

01Description

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Quantum Ethernet Network module 140NOE771x1 (Versions 7.0 and prior), Quantum processors with integrated Ethernet – 140CPU65xxxxx (all Versions), and Premium processors with integrated Ethernet (all Versions), which could cause a Denial of Service when sending a specially crafted command over Modbus.

Key dates

02Disclosure timeline

March 23, 2020 CVE published
May 28, 2026 Record updated