This vulnerability involves the handling of malformed or out-of-sequence frames in the Aviation Very High Frequency Link Control X.25 layers of the ATN-B1 CPDLC product. Such frames cause repeated resets of the system, which may degrade operational performance by increasing workload and reducing situational awareness. The vulnerability can be exploited remotely via radio frequency. The CVSS 4.0 score is 6.0 (medium severity), reflecting network attack vector with high attack complexity and low privileges required. No known exploits in the wild or vendor remediation information are currently available.

Exploitation of this vulnerability can lead to repeated system resets in the affected communication layers, increasing operator workload and reducing situational awareness. This may degrade the safety and efficiency of aviation communication but does not indicate direct compromise or data loss. The attack can be performed remotely over radio frequency, increasing exposure.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been published. Operators should monitor vendor communications for updates.