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CVE-2026-32724

PX4 autopilot has a heap Use-After-Free in MavlinkShell::available() via SERIAL_CONTROL Race Condition

Published: Mar 13, 2026Updated: Mar 16, 2026 Sources: CVE List NVDCWE-416
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.3%
Top 83.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:AAC:HPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:AAttack Vector
Adjacent
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-416

Affected Products

PX4-AutopilotPX4
Embedded
ICS / OT / IoT / industrial-network
px4 drone autopilotdronecode
Embedded
ICS / OT / IoT / industrial-network
px4oss-projectICS / OT / IoTaka px4-autopilot, autopilot, mavlink
dronecodeoss-projectICS / OT / IoT

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://github.com/PX4/PX4-Autopilot/security/advisories/GHSA-j5w2-w79c-mqrw
github.com

Timeline

Published
Mar 13, 2026
Last Updated
Mar 16, 2026

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