iOS 18.1.1 and macOS Sequoia 15.1.1 fix security vulnerabilities that were actively exploited

Apple has released iOS 18.1.1 and macOS Sequoia 15.1.1 with important security fixes. In an update to its security website, Apple described the vulnerabilities in more detail and said they may have been actively exploited in the wild.

Apple says iOS 18.1.1, iPadOS 18.1.1, and macOS Sequoia 15.1.1 fix two vulnerabilities affecting WebKit and JavaScriptCore. The company says it is aware of “a report that this issue may have been actively exploited on Intel-based Mac systems.”

JavaScriptCore

Available on: iPhone XS and later, iPad Pro 13-inch, iPad Pro 12.9-inch 3rd generation and later, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 7th generation and later, iPad mini 5th generation and later
Impact: Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited on Intel-based Mac systems.
Description: The issue was addressed through improved checks.
CVE-2024-44308: Clement Lesigne and Benoit Sevens of the Google Threat Analysis Team

WebKit

Available for: iPhone XS and later, iPad Pro 13-inch, iPad Pro 12.9-inch 3rd generation and later, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 7th generation and later, iPad mini 5th generation and later
Impact: Processing maliciously crafted web content may lead to a cross-site scripting attack. Apple is aware of a report that this issue may be actively exploited on Intel-based Mac systems.
Description: A cookie management issue was addressed through improved state management.
CVE-2024-44309: Clément Lecigne and Benoît Sevens of the Google Threat Analysis Team

You can update your iPhone and iPad to iOS 18.1.1 and iPadOS 18.1.1 by opening the Settings app, selecting General, and then selecting Software Update.

You can update your Mac to macOS Sequoia 15.1.1 by opening System Preferences, selecting General, and then selecting Software Update.

While Apple says these issues have only been exploited on Intel-based Macs so far, it is important to update your devices as soon as possible to ensure you are not affected by the vulnerabilities.

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