CVE-2025-71409: high-severity vulnerability in ATN-B1 CPDLC
No Authentication for Very High Frequency Data Link messages used in CPDLC
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.3%
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:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L
Affected products
ATN-B1 · CPDLCRelated CVEs — ATN-B1 CPDLC
In the same product, most dangerous first.
CVE-2025-71410MEDIUMMalicious Link Control Frames Can Cause Loss of CPDLC FunctionsEPSS 0.3%CVE-2025-71411MEDIUMIn CPDLC, Broadcast Control Frames Can Disconnect Multiple Aircraft SimultaneouslyEPSS 0.3%CVE-2025-71413MEDIUMIn CPDLC, Malformed or Out of Sequence Frames Can Cause ResetsEPSS 0.3%CVE-2025-71412HIGHIn CPDLC, False Emergency or Status Messages Will be Accepted as LegitimateEPSS 0.3%