CVE-2025-71411 ATN-B1 CVE debrief

Who should care

Air traffic control systems administrators, cybersecurity teams responsible for air traffic control systems, and aviation sector security professionals should assess exposure and prioritize verification and remediation efforts.

Why it matters

CVE-2025-71411 is a medium-severity vulnerability in ATN-B1 CPDLC that can be exploited remotely to disconnect multiple aircraft, potentially leading to delayed clearances and air traffic controller overload. Air traffic control systems administrators should assess exposure and prioritize verification of affected versions and remediation.

• Potential for delayed clearances due to simultaneous disconnection of multiple aircraft
• Air traffic controller overload and increased workload
• Need for verification of affected versions and remediation status

Technical summary

CVE-2025-71411 is a vulnerability in ATN-B1 CPDLC that allows remote disconnection of multiple aircraft via broadcast control frames. This can potentially lead to delayed clearances and air traffic controller overload. The vulnerability has a medium severity and can be exploited remotely over radio frequency. Limited information is available on affected versions and exploitation attempts.

Defensive priority

Air traffic control systems administrators should assess exposure and prioritize verification of affected versions and remediation.

Recommended defensive actions

• Assess exposure of air traffic control systems to CVE-2025-71411
• Verify affected versions of ATN-B1 CPDLC
• Prioritize remediation based on air traffic control system criticality

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but evidence is limited regarding affected versions and exploitation. No additional information is available on the number of affected systems or specific versions impacted. Defenders should verify the affected scope and remediation status based on vendor guidance and available advisories.

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.