---
id: CVE-2026-102728
title: >-
  Two client-side TLS/DTLS handshake parsers in NetX Secure read fields from a
  server-supplied message before validating that the message is long enough to
  contain them
summary: >-
  Two client-side TLS/DTLS handshake parsers in NetX Secure read fields from a
  server-supplied message before validating that the message is long enough to
  contain them. Both are bounded out-of-bounds reads on a remotely reachable
  path, bo…
severity: none
cwe:
  - CWE-126
vendor: Eclipse Foundation
product: NetX Duo
affected:
  - netx_duo <= 6.5.1.202602
published: '2026-09-29'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T18:17:12.497'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102728'
references:
  - url: >-
      https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-4q67-8385-j6m5
    label: emo@eclipse.org
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-29T18:42:35.818Z'
---

## Overview

Two client-side TLS/DTLS handshake parsers in NetX Secure read fields from a server-supplied message before validating that the message is long enough to contain them. Both are bounded out-of-bounds reads on a remotely reachable path, both are reached from a TLS or DTLS client connecting to a malicious or malformed server, and both have the same shape: the bounds check exists and returns the correct status, but it runs after the read it is meant to guard.

## Remediation

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