---
id: CVE-2025-55086
title: >-
  In NetXDuo version before 6.4.4, a networking support module for Eclipse
  Foundation ThreadX, in the DHCPV6 client there was an unchecked index
  extracting the server DUID from the server reply
summary: >-
  In NetXDuo version before 6.4.4, a networking support module for Eclipse
  Foundation ThreadX, in the DHCPV6 client there was an unchecked index
  extracting the server DUID from the server reply. With a crafted packet, an
  attacker could cau…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-125
  - CWE-1285
  - CWE-125
vendor: eclipse
product: threadx_netx_duo
affected:
  - threadx_netx_duo < 6.4.4.202503
patched:
  - threadx_netx_duo 6.4.4.202503
published: '2025-10-20'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T22:10:00.563'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-55086'
references:
  - url: >-
      https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-99pw-cp79-2j5j
    label: emo@eclipse.org
tags:
  - nvd
epss: 0.00413
epssPercentile: 0.3355
ingestedAt: '2026-10-08T22:11:53.820Z'
---

## Overview

In NetXDuo version before 6.4.4, a networking support module for Eclipse Foundation ThreadX, in the DHCPV6 client there was an unchecked index extracting the server DUID from the server reply. With a crafted packet, an attacker could cause an out of memory read.

## Affected

- `threadx_netx_duo < 6.4.4.202503`

## Remediation

Upgrade past the affected range:

- `threadx_netx_duo 6.4.4.202503`