CVE-2026-42807 Memory corruption in COINES SDK
Heap buffer overflow in Bosch COINES SDK allows malicious peripherals to cause crashes or execute arbitrary code via oversized packets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-42807?
CVE-2026-42807 is a high-severity memory corruption vulnerability in Bosch Sensortec COINES_SDK, published on 10 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-122
Which versions are affected by CVE-2026-42807?
How do I fix CVE-2026-42807?
No fix has been published for CVE-2026-42807 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-42807 being exploited?
There is no known exploitation of CVE-2026-42807 in the wild and no public exploit code.
Sources
Also known as GHSA-m73h-r7p8-3rvm.