---
id: CVE-2025-9166
title: A denial-of-service security issue exists in the affected product and version
summary: >-
  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.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-476
vendor: rockwellautomation
product: controllogix_5580_firmware
affected:
  - controllogix_5580_firmware = 35.013
published: '2025-09-09'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T16:10:00.257'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-9166'
references:
  - url: >-
      https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1747.html
    label: PSIRT@rockwellautomation.com
tags:
  - nvd
epss: 0.00414
epssPercentile: 0.33365
ingestedAt: '2026-10-01T18:55:42.285Z'
---

## Overview

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.

## Affected

- `controllogix_5580_firmware = 35.013`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.