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CVE-2018-7846
CRITICAL
A CWE-501: Trust Boundary Violation vulnerability on connection to the Controller exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum and Modicon Premium which could cause unauthorized access by conducting a brute force attack on Modbus protocol to the controller.
Published: May 22, 2019
Modified: Jun 17, 2026
CWE-668
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-hvj5-x43r-qg3f
A CWE-501: Trust Boundary Violation vulnerability on connection to the Controller exists in all...
References (4)
- https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/ Vendor Advisory
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0735 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-2018-0735 Exploit, Third Party Advisory
Risk Scores
CVSS Score
9.8 / 10
EPSS Score
29.58%
Top 2% most likely to be exploited
Threat Score
48.1 / 100
Data Sources
NVD
EPSS
GitHub