CVE-2025-71413: Atn-b1 Cpdlc

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Malformed or out-of-sequence frames at the Aviation Very High Frequency Link Control X.25 layers cause repeated resets which may result in increased workload and reduced situational awareness. This type of attack can be carried out remotely over radio frequency.

Affected products

• Atn-b1 Cpdlc: any version

Published 2026-08-07. Last modified 2026-09-29.