# 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.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Aug 2026
- **Updated:** 27 Aug 2026
- **Also known as:** GHSA-jv3m-r2mc-76vq

## 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 (Use of Hard-coded Credentials)

## 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.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-78251 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-78251 in the wild and no public exploit code.

Affected product: DJI Air 3. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-78251/ (Markdown: https://insights.sbomify.com/CVE-2026-78251/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-78251
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-78251
- OSV: https://osv.dev/vulnerability/CVE-2026-78251

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-78251/
Summaries are generated and may contain mistakes; the official description above is the record.