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Vulnerability record · CVE-2019-6857 · published 6 January 2020

CVE-2019-6857: Schneider-electric modicon m580 firmware vulnerability

Schneider Electric · Modicon M580 Firmware

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 of the controller when reading specific memory blocks using Modbus TCP.

7.5 CVSS 3.1 High EPSS 1.6% · top 24.8% CWE-754 · CWE-754
7.5CVSS 3.1 base score, v2 5.0
1.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
29Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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 of the controller when reading specific memory blocks using Modbus TCP.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

29 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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 AdvisoryUS Government Resource
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 AdvisoryUS Government Resource

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-6857), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.