CVE-2026-102809 PX4 Autopilot through 1.17.0 Stack Exhaustion via tests file2 Command
Attackers with shell access can crash the PX4 flight controller by supplying an excessively large chunk size to the file2 test command.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-102809?
CVE-2026-102809 is a high-severity denial of service vulnerability in PX4-Autopilot, published on 29 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
PX4 Autopilot through 1.17.0 contains an uncontrolled stack allocation vulnerability in the file2 test command that fails to validate the write chunk size parameter. Attackers with shell access can supply an excessively large value to the -c option to trigger stack overflow and crash the flight controller.
Weakness: CWE-789
Which versions are affected by CVE-2026-102809?
How do I fix CVE-2026-102809?
No fix has been published for CVE-2026-102809 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-102809 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-102809 exists.
Sources
Also known as GHSA-cxqf-5vcw-ch3g.