Apple today seeded new iOS 15.7.5, macOS Big Sur 11.7.6, and macOS Monterey 12.6.5 updates, with the new software introducing security improvements for those who are running older Macs, iPads, and iPhones that can’t be updated to iOS 16, iPadOS 16, and macOS Ventura.
iOS 15.7.5 can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General > Software Update.
The macOS Big Sur and macOS Monterey updates can be downloaded on the Mac by going to System Preferences > General > Software Update.