CVE-2026-32709
MEDIUMCVSS Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Lifecycle Timeline
2Description
PX4 autopilot is a flight control solution for drones. Prior to 1.17.0-rc2, An unauthenticated path traversal vulnerability in the PX4 Autopilot MAVLink FTP implementation allows any MAVLink peer to read, write, create, delete, and rename arbitrary files on the flight controller filesystem without authentication. On NuttX targets, the FTP root directory is an empty string, meaning attacker-supplied paths are passed directly to filesystem syscalls with no prefix or sanitization for read operations. On POSIX targets (Linux companion computers, SITL), the write-path validation function unconditionally returns true, providing no protection. A TOCTOU race condition in the write validation on NuttX further allows bypassing the only existing guard. This vulnerability is fixed in 1.17.0-rc2.
Analysis
An unauthenticated path traversal vulnerability in PX4 Autopilot's MAVLink FTP implementation (CWE-22) allows any MAVLink peer to read, write, create, delete, and rename arbitrary files on flight controller filesystems without authentication or privilege requirements. Affected versions are prior to 1.17.0-rc2, impacting both NuttX-based flight controllers and POSIX targets (Linux companion computers and SITL simulation environments). …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Review file handling controls.
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