---
id: CVE-2026-75351
title: >-
  OpENer v2.3/commit 76b95cf, contains an out-of-bounds read in the server-side
  EtherNet/IP ForwardOpen connection-path parser
summary: >-
  OpENer v2.3/commit 76b95cf, contains an out-of-bounds read in the server-side
  EtherNet/IP ForwardOpen connection-path parser. This allows a remote attacker
  to cause a denial of service.
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-125
published: '2026-10-09'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T21:17:05.990'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75351'
references:
  - url: 'https://github.com/EIPStackGroup/OpENer'
    label: cve@mitre.org
  - url: 'https://github.com/EIPStackGroup/OpENer/issues/574'
    label: cve@mitre.org
  - url: 'https://github.com/EIPStackGroup/OpENer/issues/574'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
ingestedAt: '2026-10-09T20:11:26.052Z'
---

## Overview

OpENer v2.3/commit 76b95cf, contains an out-of-bounds read in the server-side EtherNet/IP ForwardOpen connection-path parser. This allows a remote attacker to cause a denial of service.

## Remediation

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