The latest beta of iOS 14.7 fixes a bug that caused your iPhone’s Wi-Fi to be disabled by certain network names


In the last few weeks, a loophole has appeared in iOS which means that a handful of network names can actually turn off Wi-Fi on your iPhone altogether. In the latest beta of iOS 14.7, which Apple released yesterday for developers and public beta users, Apple apparently fixed this bug.

The bug in question first appeared last month. In essence, a security researcher has found that certain network names can completely disable your iPhone’s ability to connect to Wi-Fi and use other network features like AirDrop. In some cases, the problem could be fixed by resetting your iPhone’s network settings in the Settings app, but this was not always the case.

The fix was first reported by YouTuber Zollotech, who detailed the change in his latest video. Now, if you are using iOS 14.7, when you connect to one of these specific Wi-Fi names, your iPhone will work as expected.

There are still no details on a specific cause, but 9to5Mac’s Benjamin Mayo speculated:

Here’s the likely explanation: the ‘%[character]The ‘syntax is commonly used in programming languages ​​to format variables in an output string. In C, the specifier ‘% n’ means to store the number of characters written in the format string in a variable passed to the format string function. The Wi-Fi subsystem likely passes the unchecked Wi-Fi network name (SSID) to an internal library that performs string formatting, which in turn causes arbitrary memory write and memory overflow. buffer. This will cause memory corruption and the iOS watchdog will kill the process, effectively disabling Wi-Fi for the user.

iOS 14.7 is now available for developers and public beta testers, but there is still no word on a public release date. In the meantime, be sure to keep an eye out for Wi-Fi networks with percentage symbols in their name. Have you had any hang-ups with this problem? Let us know in the comments!

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