Out-of-bounds Read in Ardupilot Arduplane
CVE-2026-38971
ardupilot through Plane-4.6.3 was found to contain an out-of-bounds read issue in libraries/GCS_MAVLink/GCS_serial_control.cpp in GCS_MAVLINK::handle_serial_control().
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (50.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/ArduPilot/ardupilot (Product)
- github.com/ArduPilot/ardupilot/pull/32587 (Patch, Issue Tracking)
- github.com/ArduPilot/ardupilot/issues/32524 (Exploit, Issue Tracking)
- gist.github.com/quart27219/6bfcc615f89fb493d02aad480704593b
Frequently asked questions
- What is CVE-2026-38971?
- CVE-2026-38971 is a critical-severity vulnerability in Ardupilot Arduplane, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2026-07-02.
- How severe is CVE-2026-38971?
- Critical severity. CVSS v3 base score is 9.1 out of 10.