CVE-2025-71409 ATN-B1 CVE debrief

Who should care

Defenders responsible for Very High Frequency Data Link implementations, aviation authorities, and ground station operators should assess exposure and verify authentication mechanisms.

Why it matters

CVE-2025-71409 allows rogue ground stations to inject CPDLC messages due to a lack of authentication, potentially leading to unexpected clearances and pilot confusion. Defenders responsible for Very High Frequency Data Link implementations should assess exposure and verify authentication mechanisms.

• Potential for rogue ground stations to inject CPDLC messages
• Unexpected or misleading clearances may be issued
• Pilot confusion and potential safety risks
• Verification of authentication mechanisms is required

Technical summary

The vulnerability allows rogue ground stations to inject CPDLC messages due to a lack of authentication for Very High Frequency Data Link messages, potentially leading to unexpected or misleading clearances and pilot confusion. This type of attack can be carried out remotely over radio frequency. The CVE record was published on 2026-08-07T19:17:33.720Z and has not been modified since then. Affected product context and defensive impact should be considered when assessing exposure and verifying authentication mechanisms.

Defensive priority

Assess exposure of Very High Frequency Data Link implementations to rogue ground station injection of CPDLC messages.

Recommended defensive actions

• Review Very High Frequency Data Link implementations for exposure to rogue ground station injection of CPDLC messages
• Verify authentication mechanisms for CPDLC messages
• Assess potential impact of injected CPDLC messages on pilot clearances
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and NVD entry provide details on the vulnerability. Additional information on affected versions, remediation, and verification of authentication mechanisms is required. Defenders should assess exposure of Very High Frequency Data Link implementations to rogue ground station injection of CPDLC messages. The lack of authentication for Very High Frequency Data Link messages allows for potential safety risks.

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.