---
id: CVE-2025-55078
title: >-
  In Eclipse ThreadX before version 6.4.3, an attacker can cause a denial of
  service (crash) by providing a pointer to a reserved or unmapped memory region
summary: >-
  In Eclipse ThreadX before version 6.4.3, an attacker can cause a denial of
  service (crash) by providing a pointer to a reserved or unmapped memory
  region. Vulnerable system calls had a check of pointers, but that check wasn't
  verifying w…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-233
vendor: eclipse
product: threadx
affected:
  - threadx < 6.4.3
patched:
  - threadx 6.4.3
published: '2025-10-14'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T12:10:00.217'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-55078'
references:
  - url: >-
      https://github.com/eclipse-threadx/threadx/security/advisories/GHSA-wcfg-5jpf-hhxq
    label: emo@eclipse.org
tags:
  - nvd
epss: 0.00174
epssPercentile: 0.06285
ingestedAt: '2026-10-08T11:31:27.367Z'
---

## Overview

In Eclipse ThreadX before version 6.4.3, an attacker can cause a denial of service (crash) by providing a pointer to a reserved or unmapped memory region. Vulnerable system calls had a check of pointers, but that check wasn't verifying whether the pointer is outside the module memory region.

## Affected

- `threadx < 6.4.3`

## Remediation

Upgrade past the affected range:

- `threadx 6.4.3`