---
id: CVE-2026-75353
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 remtoe attacker
  to cause a denial of service
severity: high
published: '2026-10-09'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T19:16:42.297'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75353'
references:
  - url: 'https://github.com/EIPStackGroup/OpENer'
    label: cve@mitre.org
  - url: 'https://github.com/EIPStackGroup/OpENer/issues/570'
    label: cve@mitre.org
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-75353.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-75353'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-75353'
tags:
  - nvd
  - csaf
  - vex
  - red-hat
  - cve.org
  - exploit-available
ingestedAt: '2026-10-09T20:11:26.053Z'
vendor: Red Hat
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
epss: 0.00337
epssPercentile: 0.26905
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-19T17:06:46.127073Z'
---

## 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 remtoe attacker to cause a denial of service

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · updated 2026-10-09 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-75353.json)