Improper Check Vulnerability in Modicon Products by Schneider Electric
CVE-2019-6856

7.5HIGH

Key Information:

Vendor
Schneider Electric
Status
Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see Security Notification For Specific Versions)
Vendor
CVE Published:
6 January 2020

Summary

A vulnerability exists in Schneider Electric’s Modicon products, including the M580, M340, Quantum, and Premium series. This flaw is caused by an improper check for unusual or exceptional conditions related to Modbus TCP communication. Attackers could exploit this vulnerability by writing specific physical memory blocks, which might result in a Denial of Service, compromising the operation and reliability of the affected systems.

Affected Version(s)

Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific ) Modicon M580

Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific ) Modicon M340

Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific ) Modicon Quantum

References

https://www.se.com/ww/en/download/document/SEVD-2019-344-01
x_refsource_CONFIRM
https://www.us-cert.gov/ics/advisories/icsa-20-016-01
x_refsource_MISC

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

.