CVE-2018-7843

HIGH
7.5
CVSS Score
Published: May 22, 2019 at 07:58 PM UTC
Updated: June 17, 2026 at 02:03 AM UTC
8 products affected across 1 vendorModicon M580 FirmwareModicon M340 FirmwareModicon Quantum Firmware

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Severity
HIGH7.5
Exploit prediction
EPSS 3%

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 memory blocks with an invalid data size or with an invalid data offset in the controller over Modbus.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
schneider-electric-modicon-m340 (same device)
All versions
schneider-electric-modicon-m580 (same device)
All versions
schneider-electric-modicon-premium (same device)
All versions
schneider-electric-modicon-quantum (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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