# Apple fixes an actively exploited vulnerability in older iOS and macOS branches

DevFeed: [Apple fixes an actively exploited vulnerability in older iOS and macOS branches](<https://devfeed.tech/articles/apple-emergency-patch-for-ios-26-macos26-macos15-cve-2026-86950-mon-sep-28th-61463.md>)

Original publisher: [Read original article](<https://isc.sans.edu/diary/rss/33376>)

Published: 2026-09-28T22:35:35Z

Content type: news

Language: en

Sources: [SANS Internet Storm Center, InfoCON: green](<https://devfeed.tech/sources/sans-internet-storm-center-infocon-green.md>)

Topics: [iOS](<https://devfeed.tech/topics/ios.md>), [macOS](<https://devfeed.tech/topics/macos.md>)

Tags: [iphone](<https://devfeed.tech/tags/iphone.md>), [macos](<https://devfeed.tech/tags/macos.md>), [security](<https://devfeed.tech/tags/security.md>), [update](<https://devfeed.tech/tags/update.md>), [vulnerability](<https://devfeed.tech/tags/vulnerability.md>)

## AI overview

Apple released operating system updates; the security fix applies to older iOS and macOS branches, and the vulnerability is already being exploited. iOS and macOS 27 are unaffected. The current 27 branch update fixes functional issues, while version 27.1 is expected to support the upcoming foldable iPhone.

## Source excerpt

Apple today released patches for all of its operating systems. However, only patches for older branches include a security fix. The vulnerability being addressed in iOS 26, macOS 26 and macOS 15 is already being exploited. iOS and macOS 27 are not affected. Today&#;x26;#;39;s update for the current "27" branch does not address security issues, but fixes some functional issues that got caught after the release two weeks ago. A 27.1 version was also expected to support the new foldable iPhone and will likely include specific features geared to the soon to be available device.