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6.5
PX4 Autopilot Software: Unsecured Log Request Can Crash Drone
CVE-2026-32743
Summary
Versions of PX4 autopilot software 1.17.0-rc2 and earlier have a security risk that can cause a drone to crash if an unauthorized user sends a specific request. This can happen when an attacker has access to the drone's communication link. Users of affected versions should update to the latest version to prevent this issue.
Original title
PX4 is an open-source autopilot stack for drones and unmanned vehicles. Versions 1.17.0-rc2 and below are vulnerable to Stack-based Buffer Overflow through the MavlinkLogHandler, and are triggered ...
Original description
PX4 is an open-source autopilot stack for drones and unmanned vehicles. Versions 1.17.0-rc2 and below are vulnerable to Stack-based Buffer Overflow through the MavlinkLogHandler, and are triggered via MAVLink log request. The LogEntry.filepath buffer is 60 bytes, but the sscanf function parses paths from the log list file with no width specifier, allowing a path longer than 60 characters to overflow the buffer. An attacker with MAVLink link access can trigger this by first creating deeply nested directories via MAVLink FTP, then requesting the log list. The flight controller MAVLink task crashes, losing telemetry and command capability and causing DoS. This issue has been fixed in this commit: https://github.com/PX4/PX4-Autopilot/commit/616b25a280e229c24d5cf12a03dbf248df89c474.
nvd CVSS3.1
6.5
Vulnerability type
CWE-121
Stack-based Buffer Overflow
Published: 19 Mar 2026 · Updated: 19 Mar 2026 · First seen: 19 Mar 2026