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   iOS 14.4.1, iPadOS 14.4.1, macOS 11.2.3 Big Sur, and watchOS 7.3.2 Address
                         WebKit Security Vulnerability

   Josh Centers

   Apple has released updates for most of its current operating
   systems'[1]iOS 14.4.1 and iPadOS 14.4.1, [2]macOS Big Sur 11.2.3, and
   [3]watchOS 7.3.2'to address a single security issue in WebKit that
   could let attackers execute arbitrary code from a Web page. Separately,
   Apple updated [4]Safari 14.0.3 (8 March 2021) to new builds for both
   10.15 Catalina and 10.14 Mojave.

   The language on the linked security notes above is standard phrasing,
   but the fact that Apple would update all its operating systems and the
   relevant bits in Catalina and Mojave suggests that the vulnerability is
   serious.

     Impact: Processing maliciously crafted web content may lead to
     arbitrary code execution Description: A memory corruption issue was
     addressed with improved validation.

   If you're already running the latest versions of Apple's operating
   systems, we recommend installing these updates sooner than later due to
   the narrow scope and likely severity of the issue.

   Here's how to install the updates:
     * iOS 14.4.1 and iPadOS 14.4.1: Install the 143.6 MB MB iOS 14.4
       update (on an iPhone 11 Pro) from Settings > General > Software
       Update. The iPadOS 14.4 update weighs in at 84.1 MB on a 10.5-inch
       iPad Pro.
     * macOS Big Sur 11.2.3: Use System Preferences > Software Update to
       install the 2.44 GB update.
     * watchOS 7.3.2: Open the Watch app on your iPhone and go to My Watch
       > General > Software Update. It's a quick update (60.4 MB on an
       Apple Watch Series 4) but does require that the watch be on its
       charger and charged to at least 50%.

References

   Visible links
   1. https://support.apple.com/en-us/HT212221
   2. https://support.apple.com/en-us/HT212220
   3. https://support.apple.com/en-us/HT212222
   4. https://tidbits.com/watchlist/safari-14-0-3/

   Hidden links:
   5. https://tidbits.com/wp/../uploads/2021/03/Big-Sur-11.2.3.png

.