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CVE-2026-38971

Ardupilot Arduplane out-of-bounds read

9.1 CRITICALPublic exploitEPSS 0.68%
  1. Published2 Jul 2026

Description

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().

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected products

Ardupilot Arduplane≤ 4.6.3

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2026-38971 being actively exploited?

CVE-2026-38971 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.68%.

How severe is CVE-2026-38971?

CVE-2026-38971 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.68% probability of exploitation.

Which products are affected by CVE-2026-38971?

Affected products include Ardupilot Arduplane.

How do I fix CVE-2026-38971?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-38971 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.