CVE-2025-71409 No Authentication for Very High Frequency Data Link messages used in CPDLC
Rogue ground stations can inject unauthenticated CPDLC messages, causing misleading clearances and pilot confusion in aviation systems.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-71409?
CVE-2025-71409 is a high-severity missing authorization vulnerability in ATN-B1 CPDLC, published on 7 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Lack of authentication for Very High Frequency Data Link messages allows rogue ground stations to inject CPDLC messages leading to unexpected or misleading clearances and potential pilot confusion. This type of attack can be carried out remotely over radio frequency.
Weakness: CWE-306
Which versions are affected by CVE-2025-71409?
How do I fix CVE-2025-71409?
No fix has been published for CVE-2025-71409 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-2025-71409 being exploited?
There is no known exploitation of CVE-2025-71409 in the wild and no public exploit code.
Sources
Also known as GHSA-pf5c-m7c5-xfm9.