---
id: CVE-2026-14629
title: A flaw has been found in RT-Thread up to 5.2.2
summary: >-
  A flaw has been found in RT-Thread up to 5.2.2. Affected is the function
  read/write/sys_ioctl of the file components/lwp/lwp_syscall.c of the component
  Parameter Handler. Executing a manipulation can lead to divide by zero. The
  attack ma…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-369
  - CWE-404
published: '2026-07-04'
updated: '2026-07-04'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-14629'
references:
  - url: 'https://github.com/RT-Thread/rt-thread/'
    label: cna@vuldb.com
  - url: 'https://github.com/RT-Thread/rt-thread/issues/11429'
    label: cna@vuldb.com
  - url: 'https://github.com/RT-Thread/rt-thread/pull/11453'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-14629'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/845610'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/376145'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/376145/cti'
    label: cna@vuldb.com
tags:
  - nvd
ingestedAt: '2026-07-04T21:57:47.020Z'
epss: 0.00533
epssPercentile: 0.42581
---

## Overview

A flaw has been found in RT-Thread up to 5.2.2. Affected is the function read/write/sys_ioctl of the file components/lwp/lwp_syscall.c of the component Parameter Handler. Executing a manipulation can lead to divide by zero. The attack may be launched remotely. The exploit has been published and may be used. The pull request to fix this issue awaits acceptance.

## Remediation

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