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7.5HIGH

CVE-2025-9166 — A denial-of-service security issue exists in the affected product and version.

Rockwellautomation · Controllogix 5580 Firmware · Published 9 Sept 2025 · Modified 1 Oct 2026

Description

A denial-of-service security issue exists in the affected product and version. The security issue stems from the controller repeatedly attempting to forward messages. The issue could result in a major nonrecoverable fault on the controller.

References

What to do
  1. Check whether Controllogix 5580 Firmware is in your asset inventory.
  2. Patch in the next maintenance window; prioritise internet-facing systems.
  3. Record the decision in your risk register for audit evidence.
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Link: adminadda.com/cve/CVE-2025-9166