AMMOS Instrument Toolkit (AIT) GUI before 2.5.1 contains a missing authentication vulnerability that allows any unauthenticated network attacker to obtain a valid session and issue arbitrary spacecraft commands by calling Sessions.create() without any credential check. Attackers can exploit the unauthenticated session issuance in Sessions.create() and subsequently invoke handlecmd() to forward arbitrary commands directly to the AIT command bus without any authentication gate between session creation and command dispatch.