iPhone and iPad user should run Software Update immediately and install the latest operating system (OS) version, according to Apple.

Apple released iOS and iPadOS 14.4 on Tuesday, and the update addressed security issues that may have been actively exploited. The release notes don’t go into detail about the specifics of the security issues, saying that “Apple doesn’t disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available.”

Apple does say the OS update address an issue with the kernel, as well as with WebKit. In the case of the kernel fix, Apple says “a malicious application may be able to elevate privileges. Apple is aware of a report that this issue may have been actively exploited.”

Similarly, in regard to the WebKit issue, Apple says “a remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.”

As a result, all iPhone and iPad users should update to version 14.4 immediately.