Description
Unnumbered Disconnect (U DISC) and malformed Aviation Very High Frequency Link Control frames can terminate sessions and lead to a loss of CPDLC functions requiring a reversion to voice communication and increased controller workload. This type of attack can be carried out remotely over radio frequency.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ATN-B1 | CPDLC | All versions | — |
Advisories 1
- ICSA-26-219-01 CPDLC over ATN-B1 Vulnerabilities CISA ICS & IT advisories · Aug 7, 2026
References
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-219-01 third-party-advisory