CVE-2025-71409

HIGH 7.1

No Authentication for Very High Frequency Data Link messages used in CPDLC

CVSS Score

7.1

EPSS Score

0.0%

EPSS Percentile

0th

Lack of authentication for Very High Frequency Data Link messages allows rogue ground stations to inject CPDLC messages leading to unexpected or misleading clearances and potential pilot confusion. This type of attack can be carried out remotely over radio frequency.

CWE	CWE-306
Vendor	atn-b1
Product	cpdlc
Published	Aug 7, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

High

Availability

Low

Affected Versions

ATN-B1 / CPDLC

All versions

References

NVD ↗ CVE.org ↗ EPSS Data ↗

cisa.gov: https://www.cisa.gov/news-events/ics-advisories/icsa-26-219-01

Credits

Martin Strohmeier of Armasuisse reported this vulnerability to CISA.