MacRumors published a story that Apple has released iOS and iPadOS 14.4.2 to fix an actively exploited security vulnerability.

Apple Releases iOS and iPadOS 14.4.2 to Fix Actively Exploited Security Vulnerability

Apple today released iOS and iPadOS 14.4.2, minor security updates that come close to three weeks after the release of iOS/iPadOS 14.4.1 and more than a month after the iOS/iPadOS 14.4 updates. The iOS and iPadOS 14.4.2 updates can be downloaded for free and the software is available on all eligible devices over-the-air in the Settings app. To access the new software, go to Settings > General > Software Update. 

Apple Releases iOS and iPadOS 14.4.2 to Fix Actively Exploited Security Vulnerability