CVE-2026-32706 PX4 autopilot has a global buffer overflow in crsf_rc via oversized variable-length known packet

High 7.1 Published 13 Mar 2026 Updated 17 Mar 2026

An attacker with serial access can crash the drone autopilot by sending oversized packets to the CRSF parser, requiring the CRSF feature to be enabled.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-32706?

CVE-2026-32706 is a high-severity memory corruption vulnerability in PX4-Autopilot, published on 13 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-787, CWE-120

Which versions are affected by CVE-2026-32706?

It affects 1 product.

Products include Dronecode Px4 Drone Autopilot.

How do I fix CVE-2026-32706?

No fix has been published for CVE-2026-32706 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-32706 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32706 exists.

Sources

Also known as GHSA-mqgj-hh4g-fg5p.