CVE-2025-5640Public exploit

Simulator crash via undersized waypoint decode buffer

Published Jun 5, 2025 · Updated Jun 5, 2025

Stack-based buffer overflow in PX4 Autopilot 1.12.3 allows local users to crash the simulator via crafted MAVLink packets. MavlinkReceiver::handle_message_trajectory_representation_waypoints decodes a TRAJECTORY_REPRESENTATION_WAYPOINTS structure into a stack buffer too small for the message. Reaching the flaw requires local access to a PX4 simulation or equivalent MAVLink input path, and the demonstrated consequence is process termination.

CVSS severity4.8
Medium
EPSS probability0.99%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in PX4 Autopilot 1.12.3 allows local users to crash the simulator via crafted MAVLink packets. MavlinkReceiver::handle_message_trajectory_representation_waypoints decodes a TRAJECTORY_REPRESENTATION_WAYPOINTS structure into a stack buffer too small for the message. Reaching the flaw requires local access to a PX4 simulation or equivalent MAVLink input path, and the demonstrated consequence is process termination.

The record

CVE
CVE-2025-5640
Published
Jun 5, 2025
Updated
Jun 5, 2025
Vendor
PX4
Product
PX4 Autopilot
Classifications
CWE-119, CWE-121, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 5, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.12.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

PX4 · PX4 Autopilotversion=1.12.3

Published CVSS scores

4.8VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
1.7VulDBAV:L/AC:L/Au:S/C:N/I:N/A:P
3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-121Stack-based Buffer Overflow
T1499Endpoint Denial of Service

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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