What is CVE-2024-40427?

CVE-2024-40427 is a high-severity vulnerability in Dronecode Px4 Drone Autopilot, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.9/10. Published 2025-01-07.

How severe is CVE-2024-40427?

High severity. CVSS v3 base score is 7.9 out of 10.

Buffer overflow in Dronecode Px4 Drone Autopilot

CVE-2024-40427

Stack Buffer Overflow in PX4-Autopilot v1.14.3, which allows attackers to execute commands to exploit this vulnerability and cause the program to refuse to execute

Vulnerability class: Buffer Overflow

Published 2025-01-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.9 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (25.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Dronecode Px4 Drone Autopilot

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

github.com/PX4/PX4-Autopilot/security/advisories/GHSA-55wq-2hgm-75m4 (Exploit, Vendor Advisory)
github.com/PX4/PX4-Autopilot/commit/e03e0261a1a0c82f545e66a1e3795956c886db71 (Patch)

Frequently asked questions

What is CVE-2024-40427?: CVE-2024-40427 is a high-severity vulnerability in Dronecode Px4 Drone Autopilot, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.9/10. Published 2025-01-07.
How severe is CVE-2024-40427?: High severity. CVSS v3 base score is 7.9 out of 10.