Apple has released macOS Big Sur 11.2.3 with important security updates, and a Safari security update (version 14.0.3) for Catalina and Mojave users. This follows the release of iOS 14.4.1 and iPadOS 14.4.1, which addressed the same vulnerability on Apple’s mobile devices.
The company also released an additional support document mentioning the software addresses a WebKit vulnerability that could allow maliciously crafted web content to execute arbitrary code. Apple says macOS Big Sur 11.2.3 introduces important security updates and should be installed by all users.
- Available for: macOS Big Sur
- Impact: Processing maliciously crafted web content may lead to arbitrary code execution
- Description: A memory corruption issue was addressed with improved validation.
- CVE-2021-1844: Clément Lecigne of Google’s Threat Analysis Group, Alison Huffman of Microsoft Browser Vulnerability Research
The macOS 11.2.3 update can be downloaded on all the eligible Macs through the Software Update section in System Preferences. Apple also released watchOS 7.3.2 addressing the same WebKit vulnerability for Apple Watch Series 3 and later.