CVE-2026-32724: Dronecode PX4 Drone Autopilot

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

PX4 autopilot is a flight control solution for drones. Prior to 1.17.0-rc1, a heap-use-after-free is detected in the MavlinkShell::available() function. The issue is caused by a race condition between the MAVLink receiver thread (which handles shell creation/destruction) and the telemetry sender thread (which polls the shell for available output). The issue is remotely triggerable via MAVLink SERIAL_CONTROL messages (ID 126), which can be sent by an external ground station or automated script. This vulnerability is fixed in 1.17.0-rc1.

Affected products

• Dronecode PX4 Drone Autopilot: before 1.17.0 (fixed in 1.17.0); version 1.17.0 only

Published 2026-03-16. Last modified 2026-06-17.