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.
Scores
CVSS v3
5.3
EPSS
0.0003
EPSS Percentile
7.2%
Attack Vector
ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-416
Status
published
Products (3)
dronecode/px4_drone_autopilot
1.17.0 alpha1 (2 CPE variants)
dronecode/px4_drone_autopilot
< 1.17.0
PX4/PX4-Autopilot
< 1.17.0-rc1
Published
Mar 16, 2026
Tracked Since
Mar 16, 2026