CVE-2019-6856

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.37%
Vendor Advisory se.com
Affected: Schneider Electric SE Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions)
Published at:
Updated at:

References

Link Tags
https://www.se.com/ww/en/download/document/SEVD-2019-344-01 vendor advisory
https://www.us-cert.gov/ics/advisories/icsa-20-016-01 third party advisory us government resource

Frequently Asked Questions

What is the severity of CVE-2019-6856?
CVE-2019-6856 has been scored as a high severity vulnerability.
How to fix CVE-2019-6856?
To fix CVE-2019-6856, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-6856 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-6856 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-6856?
CVE-2019-6856 affects Schneider Electric SE Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions).
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.