CVE-2025-71410 ATN-B1 CVE debrief

Who should care

Aviation communication system administrators and security teams should assess exposure to this vulnerability and verify system configurations to prevent remote termination of CPDLC sessions.

Why it matters

CVE-2025-71410 can lead to remote termination of CPDLC sessions, increasing controller workload and potentially disrupting critical aviation communication services. Aviation communication system administrators and security teams should assess exposure and verify system configurations.

• Increased controller workload due to reversion to voice communication
• Potential disruption of critical aviation communication services
• Need for verification of system configurations and frame validation

Technical summary

CVE-2025-71410 involves Unnumbered Disconnect and malformed Aviation Very High Frequency Link Control frames that can terminate CPDLC sessions, leading to loss of functions and increased controller workload. This issue can be exploited remotely over radio frequency. The vulnerability affects aviation communication systems using CPDLC, potentially disrupting critical communication services. Affected systems require verification of proper frame validation and filtering to prevent remote termination of CPDLC sessions.

Defensive priority

Assess exposure of aviation communication systems to remote termination of CPDLC sessions; verify implementation of proper frame validation and filtering.

Recommended defensive actions

• Assess exposure of aviation communication systems to remote termination of CPDLC sessions
• Verify implementation of proper frame validation and filtering
• Review system configurations for potential vulnerabilities
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

Evidence from official sources indicates that Unnumbered Disconnect and malformed Aviation Very High Frequency Link Control frames can terminate CPDLC sessions. However, details on affected versions, specific exploitation scenarios, and remediation steps are limited.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.