---
id: CVE-2026-14606
title: A security flaw has been discovered in RT-Thread up to 5.0.2
summary: >-
  A security flaw has been discovered in RT-Thread up to 5.0.2. Affected by this
  issue is the function CAN_Receive in the library
  bsp/synwit/libraries/SWM341_CSL/CMSIS/DeviceSupport/SWM341.h of the component
  SWM341 CAN Handler. Performing …
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-119
  - CWE-121
published: '2026-07-03'
updated: '2026-07-03'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-14606'
references:
  - url: 'https://github.com/RT-Thread/rt-thread/'
    label: cna@vuldb.com
  - url: 'https://github.com/RT-Thread/rt-thread/issues/11425'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-14606'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/844591'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/376114'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/376114/cti'
    label: cna@vuldb.com
tags:
  - nvd
ingestedAt: '2026-07-04T10:56:04.379Z'
epss: 0.00197
epssPercentile: 0.08438
---

## Overview

A security flaw has been discovered in RT-Thread up to 5.0.2. Affected by this issue is the function CAN_Receive in the library bsp/synwit/libraries/SWM341_CSL/CMSIS/DeviceSupport/SWM341.h of the component SWM341 CAN Handler. Performing a manipulation results in stack-based buffer overflow. The attack needs to be approached locally. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

## Remediation

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