CVE-2026-32705

PX4 autopilot BST Device Name Length Can Overflow Driver Buffer

State: Published
Severity: 6.8 Medium
Published: Mar 13, 2026
Updated: Mar 17, 2026
Reserved: Mar 13, 2026

Description

PX4 autopilot is a flight control solution for drones. Prior to 1.17.0-rc2, the BST telemetry probe writes a string terminator using a device-provided length without bounds. A malicious BST device can report an oversized dev_name_len, causing a stack overflow in the driver and crashing the task (or enabling code execution). This vulnerability is fixed in 1.17.0-rc2.

Scores

CVSS	Score	Vector	Source
3.1	6.8 Medium	CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-121 Stack-based Buffer Overflow

Affected Products

Product	Versions
PX4-AutopilotPX4	< 1.17.0-rc2Affected

References

https://github.com/PX4/PX4-Autopilot/security/advisories/GHSA-79mp-34pp-2f3f

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