CVE intelligence and bounded remediation

CVE-2020-7541 — Schneider-Electric Modicon M340 Bmxp341000 Firmware security vulnerability

Medium CVSS 5.3

A CWE-425: Direct Request ('Forced Browsing') vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions), that could cause disclosure of sensitive data when sending a specially crafted request to the controller over HTTP.

Severity
Medium
CVSS
5.3 (3.1)
Published
2020-12-11
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-425

Affected products

  • schneider-electric / modicon_m340_bmxp341000_firmware
  • schneider-electric / modicon_m340_bmxp342000_firmware
  • schneider-electric / modicon_m340_bmxp3420102_firmware
  • schneider-electric / modicon_m340_bmxp3420102cl_firmware
  • schneider-electric / modicon_m340_bmxp342020_firmware
  • schneider-electric / modicon_m340_bmxp3420302_firmware

Showing 6 representative product identities from 20 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

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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