---
id: CVE-2026-75352
title: >-
  OpENer v2.3/commit 76b95cf, contains an integer underflow in the server-side
  EtherNet/IP ForwardOpen connection-path parser
summary: >-
  OpENer v2.3/commit 76b95cf, contains an integer underflow in the server-side
  EtherNet/IP ForwardOpen connection-path parser. This allows a remote attacker
  to cause a denial of service
severity: none
published: '2026-10-09'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T19:16:42.167'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75352'
references:
  - url: 'https://github.com/EIPStackGroup/OpENer'
    label: cve@mitre.org
  - url: 'https://github.com/EIPStackGroup/OpENer/issues/571'
    label: cve@mitre.org
tags:
  - nvd
ingestedAt: '2026-10-09T20:11:26.052Z'
---

## Overview

OpENer v2.3/commit 76b95cf, contains an integer underflow 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.