CVE-2018-7842

CRITICAL
9.8
CVSS Score
Published: May 22, 2019 at 07:59 PM UTC
Updated: June 17, 2026 at 02:03 AM UTC
8 products affected across 1 vendorModicon M580 FirmwareModicon M340 FirmwareModicon Quantum Firmware

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Severity
CRITICAL9.8
Exploit prediction
EPSS 35%

Description

A CWE-290: Authentication Bypass by Spoofing vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause an elevation of privilege by conducting a brute force attack on Modbus parameters sent to the controller.

Affected

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

All versions
schneider-electric-modicon-m340 (same device)
All versions
schneider-electric-modicon-m580 (same device)
All versions
schneider-electric-modicon-premium (same device)
All versions
schneider-electric-modicon-quantum (same device)

Remediation

No guide yet

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

CVSS

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

Quick Info

StatusMODIFIED
CWE
CWE-290

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