CVE-2026-1579 PX4 Autopilot Missing authentication for critical function
Unauthenticated attackers can execute arbitrary commands via MAVLink if message signing is disabled, requiring configuration changes to enable authentication.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-1579?
CVE-2026-1579 is a critical missing authorization vulnerability in PX4 Autopilot, published on 31 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-306
Which versions are affected by CVE-2026-1579?
It affects 1 product.
Products include Px4 Autopilot.
How do I fix CVE-2026-1579?
No fix has been published for CVE-2026-1579 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-1579 being exploited?
There is no known exploitation of CVE-2026-1579 in the wild and no public exploit code.
Sources
Also known as GHSA-vcq6-mmfw-5xm3.