CVE-2026-32706CWE-120CWE-787

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

High · published March 13, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
24.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.00326 · 24.5th percentile
Weaknesses
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'); CWE-787 · Out-of-bounds Write
Published
2026-03-13T21:17Z
EPSS history
Timeline
  • 13 MAR 21:17Z
    PX4 autopilot has a global buffer overflow in crsf_rc via oversized variable-length known packet
    cvelistv5