CVE-2026-78321 DJI Drone HTTP Media Server Denial of Service via Connection Pool Exhaustion
An attacker on the internal network can exhaust the drone's HTTP media server connection pool, causing a denial of service that blocks media retrieval.
- 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-2026-78321?
CVE-2026-78321 is a medium-severity denial of service vulnerability in DJI Air 3, published on 24 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The HTTP media server on DJI drones does not enforce sufficient limits on incoming connections or request rates. An attacker with access to the drone's internal network can exhaust the server's connection pool by repeatedly requesting a stored media file, preventing the server from handling legitimate requests and causing a denial of service that prevents the DJI Fly application from retrieving photos and videos from the aircraft in QuickTransfer mode.
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-770
Which versions are affected by CVE-2026-78321?
How do I fix CVE-2026-78321?
No fix has been published for CVE-2026-78321 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-2026-78321 being exploited?
There is no known exploitation of CVE-2026-78321 in the wild and no public exploit code.
Sources
Also known as GHSA-478p-8v46-gwpv.