CVE-2026-32705 PX4 autopilot BST Device Name Length Can Overflow Driver Buffer

Medium 6.8 Published 13 Mar 2026 Updated 17 Mar 2026

A malicious BST device can trigger a stack buffer overflow in the PX4 autopilot driver, potentially leading to code execution or system crashes.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-32705?

CVE-2026-32705 is a medium-severity memory corruption vulnerability in PX4-Autopilot, published on 13 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

PX4 autopilot is a flight control solution for drones. Prior to 1.17.0-rc2, the BST telemetry probe writes a string terminator using a device-provided length without bounds. A malicious BST device can report an oversized dev_name_len, causing a stack overflow in the driver and crashing the task (or enabling code execution). This vulnerability is fixed in 1.17.0-rc2.

Weakness: CWE-121

Which versions are affected by CVE-2026-32705?

It affects 1 product.

Products include Dronecode Px4 Drone Autopilot.

How do I fix CVE-2026-32705?

No fix has been published for CVE-2026-32705 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-2026-32705 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32705 exists.

Sources

Also known as GHSA-79mp-34pp-2f3f.