Denial of Service in Modicon Controllers by Schneider Electric
CVE-2018-7856

7.5HIGH

Key Information:

Vendor

Schneider Electric
Status
Modicon M580 Modicon M340 Modicon Quantum Modicon Premium
Vendor
CVE Published:
22 May 2019

What is CVE-2018-7856?

A vulnerability exists in the Modicon M580, M340, Quantum, and Premium controllers from Schneider Electric, which allows for a denial of service. This occurs when invalid memory blocks are written to the controller via Modbus, leading to potential disruptions in operations. Users are advised to assess their systems and apply the necessary mitigations to safeguard against this risk.

Affected Version(s)

Modicon M580 Modicon M340 Modicon Quantum Modicon Premium Modicon M580 Modicon M340 Modicon Quantum Modicon Premium

References

https://www.schneider-electric.com/en/download/document/S...
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https://www.talosintelligence.com/vulnerability_reports/T...
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.