Apple Releases macOS Big Sur 11.2.3 With WebKit Security Fix

Apple today released macOS Big Sur 11.2.3, the fifth update to the macOS Big Sur operating system that launched in November. macOS Big Sur 11.2.3 comes two weeks after the release of macOS 11.2.2, a bug fix update.

macOS Big Sur Feature Orange
The new ‌‌‌‌‌macOS Big Sur‌‌‌‌ 11.2.3 update can be downloaded for free on all eligible Macs using the Software Update section of System Preferences.

Apple says that macOS Big Sur 11.2.3 introduces important security updates and should be installed by all users, with an additional support document clarifying that the software addresses WebKit vulnerability that could allow maliciously crafted web content to execute code.

Apple has also released a new version of Safari (14.0.3) for macOS Catalina and macOS Mojave users.

Related Forum: macOS Big Sur

Popular Stories

AirPods Pro 3 Mock Feature

AirPods Pro 3 Just Months Away – Here's What We Know

Friday April 18, 2025 5:16 am PDT by
Despite being more than two years old, Apple's AirPods Pro 2 still dominate the premium wireless‑earbud space, thanks to a potent mix of top‑tier audio, class‑leading noise cancellation, and Apple's habit of delivering major new features through software updates. With AirPods Pro 3 widely expected to arrive in 2025, prospective buyers now face a familiar dilemma: snap up the proven...
iphone 16 pro models 1

17 Reasons to Wait for the iPhone 17

Thursday April 17, 2025 4:12 am PDT by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models simultaneously, which is why we often get rumored features months ahead of launch. The iPhone 17 series is no different, and we already have a good idea of what to expect from Apple's 2025 smartphone lineup. If you skipped the iPhone...
Beyond iPhone 13 Better Triad

Apple's 20th Anniversary iPhone May Finally Go All Screen

Tuesday April 15, 2025 6:31 am PDT by
Apple is preparing a "bold" new iPhone Pro model for the iPhone's 20th anniversary in 2027, according to Bloomberg's Mark Gurman. As part of what's being described as a "major shake-up," Apple is said to be developing a design that makes more extensive use of glass – and this could point directly to the display itself. Here's the case for Apple releasing a truly all-screen iPhone with no...
maxresdefault

iPhone 17 Pro Launching Later This Year With These 12 New Features

Sunday April 13, 2025 7:52 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. Subscribe to the MacRumors YouTube channel for more videos. Below, we recap key changes rumored for the iPhone 17 Pro models as of April 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and ...
CarPlay Hero

Apple Releases Wireless CarPlay Fix

Wednesday April 16, 2025 11:28 am PDT by
If you have been experiencing issues with wireless CarPlay in your vehicle lately, it was likely due to a software bug that has now been fixed. Apple released iOS 18.4.1 today, and the update's release notes say it "addresses a rare issue that prevents wireless CarPlay connection in certain vehicles." If wireless CarPlay was acting up for you, updating your iPhone to iOS 18.4.1 should...
top stories 2025 04 19

Top Stories: iPhone 17 Pro Rumors, CarPlay Bug Fix, and More

Saturday April 19, 2025 6:00 am PDT by
This week saw rumor updates on the iPhone 17 Pro and next-generation Vision Pro, while a minor iOS 18.4.1 update delivered not just security fixes but also a fix for some CarPlay issues. We also looked ahead at what else is in Apple's pipeline for the rest of 2025 and even the 20th-anniversary iPhone coming in 2027, so read on below for all the details on these stories and more! iPhone 17 ...
iOS 18

iOS 18.5 Includes Only a Few Changes So Far

Monday April 21, 2025 11:00 am PDT by
Apple seeded the third beta of iOS 18.5 to developers today, and so far the software update includes only a few minor changes. The changes are in the Mail and Settings apps. In the Mail app, you can now easily turn off contact photos directly within the app, by tapping on the circle with three dots in the top-right corner. In the Settings app, AppleCare+ coverage information is more...

Top Rated Comments

ArPe Avatar
54 months ago
If you don’t see the update:

1 Open Music app ?

2 Play Easy Listening for 1 hour ?

3 Open Software Update

You should see the update now.
Score: 37 Votes (Like | Disagree)
masterleep Avatar
54 months ago
Why are macOS bug fix updates so giant to download compared to their iOS counterparts?
Score: 15 Votes (Like | Disagree)
JBinATL Avatar
54 months ago
All of these point updates are making it a real joy in the enterprise.
Score: 12 Votes (Like | Disagree)
SkyRom Avatar
54 months ago
I used to not care about this much, but Big Sur has been so awful and buggy for my business that I'm pushing every upgrade ASAP. Maybe they'll finally finish this operating system by the time the new MacBook Pros launch. ?
Score: 12 Votes (Like | Disagree)
swrobel Avatar
54 months ago
It’s absurd to me that patching the browser requires an OS update. I mean, come on Apple, you created the App Store, a seemingly perfect tool for update single applications like this without requiring a reboot ?
Score: 11 Votes (Like | Disagree)
tywebb13 Avatar
54 months ago
macos 11.2.3 link

http://swcdn.apple.com/content/downloads/12/32/071-14766-A_Q2H6ELXGVG/zx8saim8tei7fezrmvu4vuab80m0e8a5ll/InstallAssistant.pkg

safari 14.0.3 for catalina link

http://swcdn.apple.com/content/downloads/15/11/071-10831-A_F9U2DK6CTY/iiqyne50g2xt78rc08bnt49yykpo4n3cg7/Safari14.0.3CatalinaAuto.pkg

safari 14.0.3 for mojave link

http://swcdn.apple.com/content/downloads/44/11/071-10830-A_HVHGD91GPY/cr9a8oy39eao60prj4iwtho4s7w7l5cmm7/Safari14.0.3MojaveAuto.pkg

Actually the macos 11.2.2 and 11.2.1 full installers are still available too in case you need to downgrade:

11.2.2 link:

http://swcdn.apple.com/content/downloads/37/23/071-08935-A_VI70PU5ZSV/dxl5i8eyczg8zje0wiks3r03r91euyi9sa/InstallAssistant.pkg

11.2.1 link:

http://swcdn.apple.com/content/downloads/00/60/071-05432-A_QOY2QE0UMR/puuz6c0epc7o0ozyovvi6tjxhzpf6uf04s/InstallAssistant.pkg
Score: 10 Votes (Like | Disagree)