Apple has released iOS 14.8.1 for download, for those with devices that have not updated to iOS 15 yet. The download size is 4.54GB.
You can update your iPhone or iPad by going to Settings > General > Software Update.
According to Apple, the update includes “important security updates”, which you can read about here.
Security exploits patched include those related to Audio, ColorSync, Continuity Camera, CoreGraphics, GPU Drivers, IOMobileFrameBuffer, Kernel, Sidecar, Status Bar, Voice Control, and WebKit