Apple rolled out the iOS 27.2 update just two weeks ago with new features for the iPhone Duo and more. Now, the company has released iOS 27.2.1 for eligible iPhones. It’s a minor update with no new features, but it patches some important security flaws. So, you should install it as soon as possible.
iOS 27.2.1 Update: What's New?
As is with security-focused iOS releases, Apple’s release notes for iOS 27.2.1 simply say, “This update provides bug fixes and security updates for your iPhone.” However, Apple’s security notes give us more details. Here are the key fixes:
- iMessage group chats: Fixes a flaw that could let a remote attacker join an iMessage group chat and receive its messages without being invited.
- iMessage message history: Fixes a bug where someone added to an iMessage group could see messages sent before they joined.
- AirPlay: Fixes a flaw where an attacker within Bluetooth range could bypass the limit on pairing code attempts.
- Bluetooth: Fixes a flaw that could let a nearby attacker corrupt memory, and another that could let a nearby Bluetooth device pair without your permission.
- Other fixes: Patches for rapportd, which powers Continuity features like Handoff, and the Brotli data compression library.
The good news is that Apple hasn’t said that any of these flaws were actively exploited. Still, the iMessage and Bluetooth issues are serious enough that you shouldn’t wait to update.
If your iPhone isn’t on iOS 27, Apple has released separate security updates for you too. Moreover, Apple has also pushed updates for the iPad, Mac, Apple Watch and Vision Pro. Here’s the full list:
| Device | Update |
|---|---|
| iPhone (on iOS 27) | iOS 27.2.1 |
| iPhone (on iOS 26) | iOS 26.7.3 |
| iPhone (on iOS 18) | iOS 18.7.12 |
| iPad | iPadOS 27.2.1, 26.7.3, 18.7.12 |
| Mac | macOS Golden Gate 27.2.1, Tahoe 26.7.3, Sequoia 15.8.3 |
| Apple Watch | watchOS 27.2.1, watchOS 26.6.1 |
| Vision Pro | visionOS 27.2.1 |
That said, the iOS 27.2.1 update is now rolling out to all iOS 27 eligible iPhones and you can head over to Settings -> General -> Software Update to install the new release.
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