CVE-2024-40427Public exploit

Autopilot crash via unchecked MAVLink message length

Published Jan 7, 2025 · Updated Jan 8, 2025

Stack buffer overflow in PX4-Autopilot before 1.14.3 allows attackers to crash the autopilot via a crafted MAVLink serial-control message. The handle_message_serial_control function passes serial_control_mavlink.data and its unchecked count to shell->write, causing an out-of-bounds stack read. Exploitation requires access to deliver a SERIAL_CONTROL message to an active MAVLink endpoint; the published proof of concept demonstrates a software-simulation crash, while physical-flight effects remain unestablished.

CVSS severity7.9
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack buffer overflow in PX4-Autopilot before 1.14.3 allows attackers to crash the autopilot via a crafted MAVLink serial-control message. The handle_message_serial_control function passes serial_control_mavlink.data and its unchecked count to shell->write, causing an out-of-bounds stack read. Exploitation requires access to deliver a SERIAL_CONTROL message to an active MAVLink endpoint; the published proof of concept demonstrates a software-simulation crash, while physical-flight effects remain unestablished.

The record

CVE
CVE-2024-40427
Published
Jan 7, 2025
Updated
Jan 8, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, CWE-121, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Jan 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.9CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-121Stack-based Buffer Overflow
T1499.004Application or System Exploitation Flood

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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