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There have been recent reports of a new character vulnerability on the iPhone or iPad that could cause the device to reboot (respring). According to TechCrunch, the vulnerability occurs when a user slides into the App Library's search box and enters""::The Springboard (home screen manager) will reset when the character is displayed, returning the user to the device's lock screen. While this type of reboot is not the same as a full system reboot, it only takes a few seconds for the iPhone to return to normal operation.
Similarly, the Settings app will crash if the same characters are entered in the search bar. However, typing these characters into the Spotlight search bar doesn't seem to cause any issues. In our testing, this issue only seemed to occur on devices running iOS 17, and when typing these characters on devices running iOS 18, there were some strange occurrences, such as the characters disappearing or the Settings app crashing.
In fact, just type"":This reboot is triggered by entering any character afterward. Therefore, the problem may be related to the first three symbols in this four-character sequence.
In the past, a similar character vulnerability has spread via the Messages app, which users could exploit to crash someone else's iPhone. However, this vulnerability is less impactful because it requires the device owner to manually type (or paste) the characters into the search box. No method has been found to affect iPhones via messaging or other communication platforms.
Apple is expected to fix this issue in an upcoming iOS update.
