The bug, which was reported in the press earlier this week, made it possible to hear the audio of a FaceTime user before they had accepted the call.
On Wednesday, New York Governor Andrew Cuomo and Attorney General Letitia James announced an investigation into the breach, as well as Apple's slow response in addressing the bug and warning consumers. Reports have suggested that Apple was notified of the bug by a consumer, but waited several days before addressing the issue.
"This FaceTime breach is a serious threat to the security and privacy of the millions of New Yorkers who have put their trust in Apple and its products over the years. My office will be conducting a thorough investigation into Apple's response to the situation, and will evaluate the company's actions in relation to the laws set forth by the State of New York," James said in a press release.
Separately, a lawyer in Houston is suing Apple for the bug, saying it allowed someone to eavesdrop on testimony made during the deposition of a client.
Apple's stock was up 6.83% Wednesday after reporting slightly better-than-expected earnings for its December quarter on Tuesday after the close.