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CVE-2018-7842
CRITICAL
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.
Published: May 22, 2019
Modified: Jun 17, 2026
CWE-290
CVSS Metrics
CVSSv3
Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products (4)
| Vendor | Product | Version |
|---|---|---|
| schneider-electric | modicon_m580_firmware | * |
| schneider-electric | modicon_m340_firmware | * |
| schneider-electric | modicon_quantum_firmware | * |
| schneider-electric | modicon_premium_firmware | * |
GitHub Security Advisory GHSA-36fw-7hg5-xv5p
A CWE-290: Authentication Bypass by Spoofing vulnerability exists in all versions of the Modicon...
References (4)
- https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/ Vendor Advisory
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0741 Exploit, Third Party Advisory
- https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/ Vendor Advisory
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0741 Exploit, Third Party Advisory
Risk Scores
CVSS Score
9.8 / 10
EPSS Score
35.04%
Top 2% most likely to be exploited
Threat Score
49.7 / 100
Data Sources
NVD
EPSS
GitHub