Reprinted from TidBITS by permission; reuse governed by Creative Commons license BY-NC-ND 3.0. TidBITS has offered years of thoughtful commentary on Apple and Internet topics. For free email subscriptions and access to the entire TidBITS archive, visit http://www.tidbits.com/ Security Updates for macOS 15.3.1, watchOS 11.3.1, and visionOS 2.3.1 Adam Engst Alongside the releases of iOS and iPadOS to address a USB Restricted Mode vulnerability (see ' [1]iOS 18.3.1, iPadOS 18.3.1, and iPadOS 17.7.5 Block USB Restricted Mode Attack,' 10 February 2025), Apple also pushed out [2]macOS 15.3.1 Sequoia, [3]macOS 14.7.4 Sonoma, [4]macOS 13.7.4 Ventura, [5]watchOS 11.3.1, and [6]visionOS 2.3.1. None of these releases have [7]security notes listing CVE entries, suggesting they address a serious vulnerability Apple discovered internally. Release notes are currently available only for the three macOS updates, and they say only, 'This update provides important security fixes and is recommended for all users.' All I can imagine is that working on the USB Restricted Mode vulnerability in iOS and iPadOS uncovered another vulnerability in the core code shared by all of Apple's operating systems. Without release notes that at least hint at the severity of this vulnerability, the unusual manner in which these were released is the only basis for recommending an immediate update. There's no need to drop everything, but install these updates sooner rather than later. References Visible links 1. https://tidbits.com/2025/02/10/ios-18-3-1-ipados-18-3-1-and-ipados-17-7-5-block-usb-restricted-mode-attack/ 2. https://support.apple.com/en-us/120283 3. https://support.apple.com/en-us/109035 4. https://support.apple.com/en-us/106337 5. https://support.apple.com/en-us/121163 6. https://support.apple.com/en-us/121164 7. https://support.apple.com/en-us/100100 Hidden links: 8. https://tidbits.com/uploads/2025/02/no-CVE-entry-security-notes.png .