CVE intelligence and bounded remediation

CVE-2018-7804 — Schneider-Electric Modicom M340 Firmware security vulnerability

Medium CVSS 6.1

A URL Redirection to Untrusted Site vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where a user clicking on a specially crafted link can be redirected to a URL of the attacker's choosing.

Severity
Medium
CVSS
6.1 (3.0)
Published
2018-12-17
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-601

Affected products

  • schneider-electric / modicom_m340_firmware
  • schneider-electric / modicom_premium_firmware
  • schneider-electric / modicom_quantum_firmware
  • schneider-electric / modicom_bmxnor0200h_firmware

Matched remediation archetype

General vulnerability remediation

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Confirm the affected component, deployment paths, reachable interfaces, and enabled features from inventories and configuration, without probing production destructively.
  • Compare the advisory's affected conditions with the repository lockfiles, build manifests, artifacts, and runtime inventory.
  • Identify data sensitivity, trust boundaries, and privilege level for every confirmed affected deployment.

Remediate safely

  • Apply a vendor-supported fix or remove the affected component or feature; record the selected change and its source in the repository.
  • Update direct and transitive dependency locks, generated artifacts, deployment manifests, and asset inventories together.
  • Add a regression test for the documented unsafe condition using inert inputs and preserve rollback instructions.

Authoritative sources

Complete CVE record and remediation plan

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