CVE intelligence and bounded remediation

CVE-2020-7488 — Schneider-Electric Ecostruxure Machine Expert security vulnerability

High CVSS 7.5

A CWE-319: Cleartext Transmission of Sensitive Information vulnerability exists which could leak sensitive information transmitted between the software and the Modicon M218, M241, M251, and M258 controllers.

Severity
High
CVSS
7.5 (3.1)
Published
2020-04-22
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-319

Affected products

  • schneider-electric / ecostruxure_machine_expert
  • schneider-electric / somachine
  • schneider-electric / somachine_motion
  • schneider-electric / modicon_m218_firmware
  • schneider-electric / modicon_m241_firmware
  • schneider-electric / modicon_m251_firmware

Showing 6 representative product identities from 7 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Cryptography, certificate, signature, and channel validation

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

Check exposure

  • Inventory affected algorithms, key uses, trust stores, certificate validation settings, random sources, and plaintext channels across clients and services.
  • Determine which secrets, identities, signatures, or data protections depend on the affected primitive or validation path.
  • Check debug, compatibility, fallback, and hostname or audience override settings in build and runtime configuration.

Remediate safely

  • Use a maintained platform cryptographic API with approved algorithms, modes, parameters, randomness, and full peer identity validation.
  • Remove insecure fallback and validation bypasses; separate keys by purpose and load them from managed secret storage.
  • Plan rotation or reissuance for affected keys, certificates, tokens, hashes, or ciphertext and document compatibility sequencing.

Authoritative sources

Complete CVE record and remediation plan

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