What’s Vulnerable › Vulnerabilities

CVE-2018-7853

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-05-22 · updated 2026-06-17
• Weakness: CWE-754

Description

A CWE-248: Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause denial of service when reading invalid physical memory blocks in the controller over Modbus

Affected products

• Schneider-Electric Modicon M340 Firmware: before 3.10 — fixed in 3.10
• Schneider Electric SE Modicon M580: before 2.90 — fixed in 2.90
• Schneider-Electric Modicon Premium Firmware: all versions
• Modicon Quantum - all firmware versions: all versions

How to fix

Upgrade to a fixed version: Schneider-Electric Modicon M340 Firmware 3.10; Schneider Electric SE Modicon M580 2.90. Check the vendor advisory for mitigations.

References

• https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0764
• https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0764

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