CVE-2020-7477

HIGH
7.5
CVSS Score
Published: March 23, 2020 at 07:14 PM UTC
Updated: June 17, 2026 at 03:24 AM UTC
58 products affected across 1 vendor140CPU65150 Firmware140CPU65160 Firmware140CPU65260 Firmware

Using 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 Ethernet, all versions) by N/A?

Get instant alerts when new vulnerabilities affect 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 Ethernet, all versions) - before attackers find them.

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Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
schneider-electric-140cpu65150 (same device)
All versions
schneider-electric-140cpu65160 (same device)
All versions
schneider-electric-140cpu65160s (same device)
All versions
schneider-electric-140cpu65260 (same device)
All versions
schneider-electric-140cpu65860 (same device)
All versions
schneider-electric-140cpu67060 (same device)
All versions
schneider-electric-140cpu67160 (same device)
All versions
schneider-electric-140cpu67160s (same device)
All versions
schneider-electric-140cpu67260 (same device)
All versions
schneider-electric-140cpu67261 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-754

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