CVE-2026-1579CRITICAL 9.8EPSS p55.8%

CVE-2026-1579CVE-2026-1579

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.93% probability of exploitation · percentile 55.8% · 2026-06-19T12:03:05Z
Published2026-03-31
Last modified2026-04-07

Underlying weaknesses· 1

CWE-306

References

  1. https://docs.px4.io/main/en/mavlink/message_signing
  2. https://docs.px4.io/main/en/mavlink/security_hardening
  3. https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-090-02.json
  4. https://www.cisa.gov/news-events/ics-advisories/icsa-26-090-02

1

TypeTargetConfidenceTier
WeaknessMissing Authentication for Critical Functioncwe-3060%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.