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CWE

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CVE-2026-1579

Published: Mar 31, 2026

Modified: Mar 31, 2026

PUBLISHED

CVSS v3.1

9.8

CRITICAL

Description

The MAVLink communication protocol does not require cryptographic authentication by default. When MAVLink 2.0 message signing is not enabled, any message -- including SERIAL_CONTROL, which provides interactive shell access -- can be sent by an unauthenticated party with access to the MAVLink interface. PX4 provides MAVLink 2.0 message signing as the cryptographic authentication mechanism for all MAVLink communication. When signing is enabled, unsigned messages are rejected at the protocol level.

Vendor	Product	Versions
PX4	Autopilot	affected `v1.16.0 SITL`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

https://docs.px4.io/main/en/mavlink/security_hardening

https://docs.px4.io/main/en/mavlink/message_signing

https://www.cisa.gov/news-events/ics-advisories/icsa-26-090-02

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-090-02.json

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