Paper/Archive/CVE-2026-1579

CVE-2026-1579

PX4 Autopilot — PX4 Autopilot Missing authentication for critical function

CVSS 9.8 (CNA)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 61.6.616 × 2012.3 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

Autopilotv1.16.0 SITL–CNA

Scores by source

icscert (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

icscert (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refdocs.px4.io/main/en/mavlink/security_hardening refdocs.px4.io/main/en/mavlink/message_signing refcisa.gov/news-events/ics-advisories/icsa-26-090-02 refgithub.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-090-02.json