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Status published
Unknown
CVE-2019-6856
A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability...
Vulnerability Description
A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions) which could cause a Denial of Service when writing specific physical memory blocks using Modbus TCP.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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Affected Vendor
Schneider Electric SE
View all reports →Affected Software
Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions)
Vulnerable Versions:
Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions)
Timeline
Official Publish:
January 6th, 2020
Last Modified:
May 29th, 2026
Added to House:
July 20th, 2026
CVSS Vectors
No vector data available