---
id: CVE-2026-12656
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 improper handling of network storm traffic,
  which can interrupt communication, cause device faults, and affect open TCP
  and UDP …
severity: none
cwe:
  - CWE-770
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T16:17:20.333'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-12656'
references:
  - url: >-
      https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1801.html
    label: PSIRT@rockwellautomation.com
tags:
  - nvd
ingestedAt: '2026-10-13T15:33:40.076Z'
---

## Overview

A denial-of-service security issue exists in the affected product and version. The security issue stems from improper handling of network storm traffic, which can interrupt communication, cause device faults, and affect open TCP and UDP ports. A power cycle is required to recover the device to its normal state.

## Remediation

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