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High 7.1Published Aug 7, 2026

CVE-2025-71409No Authentication for Very High Frequency Data Link messages used in CPDLC

Updated under an hour ago ()

Does this affect you?

It affects ATN-B1 CPDLC. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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.

CVSS
7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L
Weakness (CWE)
CWE-306
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
icscert
NVD analysis
Deferred
Record last updated
Aug 10, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
ATN-B1 CPDLC
atn_b1:cpdlc (from the name)
all versions
CNA record

References

  • third-party-advisory

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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