Apple has release the iOS 10.3.3 update that is affecting iPhone 5 and later, iPad 4th generation and later, and iPod touch 6th generation.
The updates addresses many vulnerabilities in the Contacts, coreAudio, EventKitUI, IOUSBFamily and Wi-Fi.
Serious Wi-Fi Vulnerability
The patch in the wifi module is very serious one. In the Wi-fi module “an attacker within range may be able to execute arbitrary code on the Wi-Fi chip”. Apple reported. The issue was fixed in the 10.3.3 update.
“A memory corruption issue was addressed with improved memory handling.”
But this leaves at large all older Apple devices seriously vulnerable since the update applies to newer iPhones with Broadcom WiFi chips (model numbers BCM4354, 4358 and 4359) reports Forbes
Apparently the iPhone has been vulnerable to an hacker who could take complete control of the device just through the proximity to Wi-Fi.