It turns out that the iOS 10.3.3 software update fixes a serious vulnerability. The vulnerability is to do with WiFi and it was disclosed in Apple’s security document.
You can see the description of the vulnerability below:
Impact: An attacker within range may be able to execute arbitrary code on the Wi-Fi chip
Description: A memory corruption issue was addressed with improved memory handling.
If you have not updated your iOS device to iOS 10.3.3 as yet it might be a good time to download the update and install it. you can install the update on your iPhone or iPad by going to Settings > General > Software update.