CVE-2026-1579 | The MAVLink communication protocol does not require cryptogr… | CVSS 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.

Metadata

CVE ID: CVE-2026-1579
State: PUBLISHED
Assigner: icscert
Reserved: 2026-01-28 22:27 UTC
Published: 2026-03-31 20:20 UTC
Last updated: 2026-03-31 20:36 UTC
Primary CWE: CWE-306
CWE-306
Vendor / Product: PX4 / Autopilot
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
PX4	Autopilot	—	v1.16.0 SITL

Weakness (CWE)

CWE	Source	Description
CWE-306	cna	CWE-306

CVSS scores (2)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3	CRITICAL	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References (4)