Apple has issued a critical warning for millions of Mac and MacBook users around the world: update your macOS immediately. This alert comes after the release of macOS Sequoia 15.1.1, an important update that addresses serious security flaws. The update, released earlier this week, follows the major macOS 15.1 release less than a month ago, which focused on resolving minor bugs and incorporating the initial wave of generative AI capabilities within Apple’s Intelligence suite.
What Issues Does macOS 15.1.1 Address?
The latest patch targets two significant vulnerabilities that could compromise user security:
- CVE-2024-44308 (JavaScriptCore): This issue concerns “maliciously crafted web content” that could be used to exploit the system.
- CVE-2024-44309 (WebKit): This flaw involves “processing maliciously crafted web content,” which could lead to a cross-site scripting (XSS) attack.
Forbes cybersecurity expert Kate O’Flaherty has noted that these vulnerabilities are particularly concerning, as they could allow attackers to take control of an affected system and potentially steal sensitive information.
Why the Update is Critical
The U.S. Cybersecurity and Infrastructure Agency (CISA) has reinforced the importance of this update, stating, “A cyber threat actor could exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the following advisories and apply necessary updates.”
A Broader Update for Apple Users
Apple rolled out macOS 15.1.1 alongside updates for iOS (18.1.1) and iPadOS (18.1.1). Forbes’ David Phelan noted that the iOS update also includes patches to ensure fixes are available across as many iPhone models as possible, extending back to iOS 17.
Compatibility Details
macOS Sequoia 15.1.1 supports all Apple Silicon Macs, such as the M-series chipsets found in newer MacBook models. However, it also extends support to select Intel-powered Macs, specifically those equipped with Xeon W or Coffee Lake chipsets and newer. This includes:
- iMac Pros (2017+)
- iMacs (2019+)
- MacBook Pros (2018+)
- Mac Minis (2018+)
- Mac Pros (2019+)
For users with compatible devices, applying this update is essential to maintain system security and protect against potential cyber threats. Don’t delay—update your MacBook or Mac now.
