What is CVE-2026-32706?

CVE-2026-32706 is a high-severity vulnerability in Dronecode Px4 Drone Autopilot, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.1/10. Published 2026-03-16.

How severe is CVE-2026-32706?

High severity. CVSS v3 base score is 7.1 out of 10.

Buffer overflow in Dronecode Px4 Drone Autopilot

CVE-2026-32706

PX4 autopilot is a flight control solution for drones. Prior to 1.17.0-rc2, The crsf_rc parser accepts an oversized variable-length known packet and copies it into a fixed 64-byte global buffer without a bounds check. In deployments where crsf_rc is enabled on a CRSF serial port, an adjacent/raw-serial attacker can trigger memory corruption and crash PX4. This vulnerability is fixed in 1.17.0-rc2.

Vulnerability class: Buffer Overflow

Published 2026-03-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.

EPSS exploit prediction

EPSS: 0.003 (21.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.5% 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 — versions 1.17.0
Px4 Px4-Autopilot — versions < 1.17.0-rc2

Weakness classification (CWE)

References

github.com/PX4/PX4-Autopilot/security/advisories/GHSA-mqgj-hh4g-fg5p (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-32706?: CVE-2026-32706 is a high-severity vulnerability in Dronecode Px4 Drone Autopilot, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.1/10. Published 2026-03-16.
How severe is CVE-2026-32706?: High severity. CVSS v3 base score is 7.1 out of 10.