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Vulnerability record · CVE-2018-7844 · published 22 May 2019

CVE-2018-7844: Schneider-electric modicon premium firmware information exposure vulnerability

Schneider Electric · Modicon Premium Firmware

A CWE-200: Information Exposure vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause the disclosure of SNMP information when reading memory blocks from the controller over Modbus.

7.5 CVSS 3.1 High EPSS 3.3% · top 12.0% CWE-200 · Information exposure
7.5CVSS 3.1 base score, v2 5.0
3.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A CWE-200: Information Exposure vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause the disclosure of SNMP information when reading memory blocks from the controller over Modbus.

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

Affected products

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

References

LinkTags
https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/ MitigationVendor Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0739 ExploitThird Party Advisory
https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/ MitigationVendor Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0739 ExploitThird Party Advisory

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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-2018-7844), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.