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.

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

EPSS: 0.005 (40.5th percentile) — read the EPSS interpretation.

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.

Affected products

Ardupilot Arduplane
N/a — versions n/a

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

cve@mitre.org (Product)
cve@mitre.org (Patch, Issue Tracking)
cve@mitre.org (Exploit, Issue Tracking)
cve@mitre.org

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.