CVE-2026-12659 - Vulnerability Details - OpenCVE

A denial-of-service security issue exists in the affected products. The security issue stems from improper handling of exceptional conditions when processing crafted CIP packets sent to the adapter. A power cycle is required to recover the module and associated I/O.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact partial

No data.

No data.

No data.

No data.

References

Link	Providers
https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1789.html

History

Tue, 14 Jul 2026 16:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 14 Jul 2026 15:45:00 +0000

Type	Values Removed	Values Added
Description		A denial-of-service security issue exists in the affected products. The security issue stems from improper handling of exceptional conditions when processing crafted CIP packets sent to the adapter. A power cycle is required to recover the module and associated I/O.
Title		Rockwell Automation Flex 5000® Adapter - Denial of Service
Weaknesses		CWE-415
References		https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1789.html
Metrics		cvssV4_0 `{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}`

MITRE

Status: PUBLISHED

Assigner: Rockwell

Published: 2026-07-14T15:14:14.363Z

Updated: 2026-07-14T15:57:22.367Z

Reserved: 2026-06-18T18:54:20.493Z

Link: CVE-2026-12659

Vulnrichment

Updated: 2026-07-14T15:57:17.683Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

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