CVE-2025-71409

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

Published Aug 7, 2026 CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Workaround

These vulnerabilities in the CPDLC protocol stack are exploitable in a lab environment. However, they require very specific conditions to be met and are unlikely to be exploited outside of a lab setting.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Atn-b1
Atn-b1 cpdlc
Vendors & Products Atn-b1
Atn-b1 cpdlc
Type Values Removed Values Added
Description 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.
Title No Authentication for Very High Frequency Data Link messages used in CPDLC
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Aug 10, 2026, 6:24 PM
Reserved
Aug 4, 2026, 8:31 PM
Status
Deferred
Published
Aug 7, 2026, 7:17 PM
Modified
Sep 29, 2026, 11:10 AM