Name of the Vulnerable Software and Affected Versions:
Safari versions prior to 14.1
iOS versions prior to 12.5.3
iOS versions prior to 14.5
iPadOS versions prior to 14.5
watchOS versions prior to 7.4
tvOS versions prior to 14.5
macOS Big Sur versions prior to 11.3
Description:
The issue is related to a use after free problem in the WebKit module, which can be exploited by a remote attacker using a specially crafted web page, potentially leading to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
Recommendations:
For Safari version prior to 14.1, update to Safari 14.1 or later.
For iOS version prior to 12.5.3, update to iOS 12.5.3 or later.
For iOS version prior to 14.5, update to iOS 14.5 or later.
For iPadOS version prior to 14.5, update to iPadOS 14.5 or later.
For watchOS version prior to 7.4, update to watchOS 7.4 or later.
For tvOS version prior to 14.5, update to tvOS 14.5 or later.
For macOS Big Sur version prior to 11.3, update to macOS Big Sur 11.3 or later.