---
id: CVE-2026-42807
title: >-
  A heap-based buffer overflow vulnerability in the PC bridge protocol decoder
  of BoschSensortec COINES_SDK (versions 2.10 through 2.12.2) allows attackers
  to cause a denial of service (process crash) or potentially execute arbitrary
  code.…
summary: >-
  A heap-based buffer overflow vulnerability in the PC bridge protocol decoder
  of BoschSensortec COINES_SDK (versions 2.10 through 2.12.2) allows attackers
  to cause a denial of service (process crash) or potentially execute arbitrary
  code.…
severity: high
cvss: 8
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-122
vendor: Bosch Sensortec
product: COINES_SDK
affected:
  - COINES_SDK >= 2.10 <= 2.12.2
published: '2026-09-10'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T16:17:12.377'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-42807'
references:
  - url: 'https://psirt.bosch.com/security-advisories/BOSCH-SA-223618.html'
    label: psirt@bosch.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-10T14:59:49.196198Z'
ingestedAt: '2026-09-10T09:45:12.029Z'
epss: 0.00312
epssPercentile: 0.21441
---

## Overview

A heap-based buffer overflow vulnerability in the PC bridge protocol decoder of BoschSensortec COINES_SDK (versions 2.10 through 2.12.2) allows attackers to cause a denial of service (process crash) or potentially execute arbitrary code. 

The bridge decoder ({{bridge_decoder.c}}) trusts the packet length field provided by the external device and forwards it to the host response queue ({{mqueue_add_data}}) without validating the bounds of the destination buffer. 

A malicious or compromised USB or Bluetooth Low Energy (BLE) peripheral can advertise a payload size up to ~3 KB, which exceeds the default queue slot size of 255 bytes. 

This results in an unbounded heap overwrite ({{memcpy}}), corrupting adjacent heap metadata on the host system when processing the device's response.

## Remediation

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