What is CVE-2026-32724?

CVE-2026-32724 is a medium-severity vulnerability in Dronecode Px4 Drone Autopilot, classified under Use After Free. CVSS score: 5.3/10. Published 2026-03-16.

How severe is CVE-2026-32724?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Use After Free in Dronecode Px4 Drone Autopilot

CVE-2026-32724

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.

Vulnerability class: Use-After-Free

EPSS: 0.003 (16.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Dronecode Px4_drone_autopilot — versions 1.17.0
Px4 Px4-autopilot — versions < 1.17.0-rc1

Weakness classification (CWE)

CWE-416 — Use After Free

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-32724?: CVE-2026-32724 is a medium-severity vulnerability in Dronecode Px4 Drone Autopilot, classified under Use After Free. CVSS score: 5.3/10. Published 2026-03-16.
How severe is CVE-2026-32724?: Medium severity. CVSS v3 base score is 5.3 out of 10.