What is CVE-2026-1579?

CVE-2026-1579 is a critical-severity vulnerability in Px4 Autopilot, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-03-31.

How severe is CVE-2026-1579?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Px4 Autopilot

CVE-2026-1579

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 sen…

Vulnerability class: Broken Authentication

EPSS: 0.001 (30.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Px4 Autopilot — versions v1.16.0 SITL

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

docs.px4.io/main/en/mavlink/security_hardening
docs.px4.io/main/en/mavlink/message_signing
www.cisa.gov/news-events/ics-advisories/icsa-26-090-02
github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-090-02.js…

Frequently asked questions

What is CVE-2026-1579?: CVE-2026-1579 is a critical-severity vulnerability in Px4 Autopilot, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-03-31.
How severe is CVE-2026-1579?: Critical severity. CVSS v3 base score is 9.8 out of 10.