CVE-2026-78251 DJI Drone FTP Service Allows Unrestricted Storage Consumption of the /blackbox Directory
Hardcoded FTP credentials allow attackers to upload unlimited files, exhausting storage and preventing flight record logging or firmware updates on DJI drones.
- 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-2026-78251?
CVE-2026-78251 is a critical vulnerability in DJI Air 3, published on 24 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
DJI drones contain an FTP service that uses hardcoded credentials shared across affected models and permits authenticated users to upload files without limits on file size, file count, or total storage consumed in **/blackbox/upgrade/**, as well as overwrite existing files in that directory. An attacker with access to the drone's internal network or USB RNDIS interface can exhaust the available storage, preventing the aircraft from writing flight records, logs, and telemetry and potentially preventing subsequent firmware updates. Uploaded files persist across reboot and factory reset.
Affected models are DJI Neo until 01.00.0400, DJI Neo 2 until 01.00.0500, DJI Flip until 01.00.1200, DJI Air 3 until 01.00.1600, DJI Air 3S until 01.00.1400, DJI Avata 2 until 01.00.0400, DJI Avata 360 until 01.00.0300, DJI Mavic 3 until 01.00.1400, DJI Mavic 3 Classic until 01.00.0800, DJI Mavic 3 Pro until 01.01.0700, DJI Mavic 4 Pro until 01.00.0500, DJI Mini 2 until 01.07.0200, DJI Mini 3 until 01.00.0500, DJI Mini 3 Pro until 01.00.0900, DJI Mini 4 Pro until 01.00.1100, and DJI Mini 5 Pro until 01.00.0600.
Remediation requires a firmware update from the vendor.
Weakness: CWE-798
Which versions are affected by CVE-2026-78251?
How do I fix CVE-2026-78251?
No fix has been published for CVE-2026-78251 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-78251 being exploited?
There is no known exploitation of CVE-2026-78251 in the wild and no public exploit code.
Sources
Also known as GHSA-jv3m-r2mc-76vq.