Regulatory
Key facts
CISA published advisory ICSA-26-219-01 titled "CPDLC over ATN-B1 Vulnerabilities."
Key facts
Initial release date was 2026-08-07 and revision history shows initial publication on that date
Key facts
ATN-B1 CPDLC relies on legacy clear-text, unauthenticated radio-frequency links
Atlas Watchline
CISA said five vulnerabilities in ATN-B1 CPDLC data link systems could allow message injection, session resets…