CVE-2025-71410

Malicious Link Control Frames Can Cause Loss of CPDLC Functions

Published Aug 7, 2026 CVSS 4.0 · 6 Medium EPSS < 1% KEV · Not listed
Description
Unnumbered Disconnect (U DISC) and malformed Aviation Very High Frequency Link Control frames can terminate sessions and lead to a loss of CPDLC functions requiring a reversion to voice communication and increased controller workload. 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

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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 Unnumbered Disconnect (U DISC) and malformed Aviation Very High Frequency Link Control frames can terminate sessions and lead to a loss of CPDLC functions requiring a reversion to voice communication and increased controller workload. This type of attack can be carried out remotely over radio frequency.
Title Malicious Link Control Frames Can Cause Loss of CPDLC Functions
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Aug 10, 2026, 9:13 PM
Reserved
Aug 4, 2026, 8:31 PM
Status
Deferred
Published
Aug 7, 2026, 7:17 PM
Modified
Sep 29, 2026, 11:10 AM