CVE-2026-32709 PX4 Autopilot MAVLink FTP Unauthenticated Path Traversal (Arbitrary File Read/Write/Delete)
Unauthenticated attackers can read, write, or delete arbitrary files on PX4 drone flight controllers via MAVLink FTP path traversal flaws.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-32709?
CVE-2026-32709 is a medium-severity path traversal vulnerability in PX4-Autopilot, published on 13 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-22
Which versions are affected by CVE-2026-32709?
It affects 1 product.
Products include Dronecode Px4 Drone Autopilot.
How do I fix CVE-2026-32709?
No fix has been published for CVE-2026-32709 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-32709 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32709 exists.
Other vulnerabilities in PX4-Autopilot
Sources
Also known as GHSA-fh32-qxj9-x32f.