CVE-2018-7794

State: Published
Severity: 7.5 High
Published: Jan 6, 2020
Updated: May 29, 2026
Reserved: Mar 8, 2018

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 reading data with invalid index using Modbus TCP.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-754 Improper Check for Unusual or Exceptional Conditions

Affected Products

Product	Versions
Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions)Schneider Electric SE	Modicon M580Affected Modicon M340Affected Modicon QuantumAffected Modicon Premium (see security notification for specific versions)Affected

References

https://www.se.com/ww/en/download/document/SEVD-2019-344-01

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