CVE-2026-0646 - Vulnerability Details - OpenCVE

A denial-of-service security issue exists within the 1794-AENTR adapter due to improper memory handling of CIP protocol requests. This vulnerability can result in the adapter faulting and losing connection to its associated I/O modules, requiring a manual reset to recover.

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.

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References

Link	Providers
https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1775.html

History

Tue, 16 Jun 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, 16 Jun 2026 15:00:00 +0000

Type	Values Removed	Values Added
Description		A denial-of-service security issue exists within the 1794-AENTR adapter due to improper memory handling of CIP protocol requests. This vulnerability can result in the adapter faulting and losing connection to its associated I/O modules, requiring a manual reset to recover.
Title		Rockwell Automation FLEX I/O Dual-port EtherNet/IP Adapters – Multiple Vulnerabilities
Weaknesses		CWE-401
References		https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1775.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: 2026-06-16T14:19:21.386Z

Updated: 2026-06-16T15:24:33.927Z

Reserved: 2026-01-06T16:08:44.716Z

Link: CVE-2026-0646

Vulnrichment

Updated: 2026-06-16T15:24:30.668Z

NVD

Status : Awaiting Analysis

Published: 2026-06-16T15:16:33.567

Modified: 2026-06-16T15:26:04.250

Link: CVE-2026-0646

Redhat

No data.

OpenCVE Enrichment

No data.

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