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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (12.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.002 · change: -0.000
Affected products
- Dronecode Px4 Drone Autopilot — versions 1.17.0
- Px4 Px4-Autopilot — versions < 1.17.0-rc1
Weakness classification (CWE)
References
- github.com/PX4/PX4-Autopilot/security/advisories/GHSA-j5w2-w79c-mqrw (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.