What’s Vulnerable › Vulnerabilities
CVE-2026-32724: PX4 autopilot has a heap Use-After-Free in MavlinkShell::available() via SERIAL_CONTROL Race Condition
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-03-16 · updated 2026-06-17
- Weakness: CWE-416
Description
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
- PX4-Autopilot: before 1.17.0; 1.17.0-alpha1, 1.17.0-beta1 — fixed in 1.17.0
How to fix
Upgrade to a fixed version: PX4-Autopilot 1.17.0. Check the vendor advisory for mitigations.
References
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