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

iphone 17 models

No iPhone 18 Launch This Year, Reports Suggest

Thursday January 1, 2026 8:43 am PST by
Apple is not expected to release a standard iPhone 18 model this year, according to a growing number of reports that suggest the company is planning a significant change to its long-standing annual iPhone launch cycle. Despite the immense success of the iPhone 17 in 2025, the iPhone 18 is not expected to arrive until the spring of 2027, leaving the iPhone 17 in the lineup as the latest...
apple intelligence black

Report: Apple's AI Strategy Could Finally Pay Off in 2026

Tuesday December 30, 2025 9:01 am PST by
Apple's restrained artificial intelligence strategy may pay off in 2026 amid the arrival of a revamped Siri and concerns around the AI market "bubble" bursting, The Information argues. The speculative report notes that Apple has taken a restrained approach with AI innovations compared with peers such as OpenAI, Google, and Meta, which are investing hundreds of billions of dollars in data...
apple fitness 2026 1

Apple Teases 'Something Big' Coming Soon to Apple Fitness+

Tuesday December 30, 2025 2:11 pm PST by
The Apple Fitness+ Instagram account today teased that the service has "big plans" for 2026. In a video, several Apple Fitness+ trainers are shown holding up newspapers with headlines related to Apple Fitness+. What's Apple Fitness+ Planning for the New Year? Something Big is Coming to Apple Fitness+ The Countdown Begins. Apple Fitness+ 2026 is Almost Here 2026 Plans Still Under ...
iphone 17 pro dark blue 1

iPhone 17 Pro and Pro Max Users Report Static Speaker Noise While Charging

Tuesday December 30, 2025 10:39 am PST by
iPhone 17 Pro and Pro Max owners are having trouble with the speakers of their devices, and have complained about a static or hissing noise that occurs when the iPhone is charging. There are multiple discussions about the issue on Reddit, the MacRumors forums, and Apple's Support Community, where affected users say there is a noticeable static noise "like an old radio." Some people report...
maxresdefault

Hands-On With a Rough iPhone Fold Mockup

Monday December 29, 2025 10:55 am PST by
Apple is rumored to be introducing a foldable iPhone in September 2026, and since it will bring the biggest form factor change since the iPhone was introduced in 2007, curiosity about the design is high. A 3D designer created an iPhone Fold design based on rumors, and we printed it out to see how it compares to Apple's current iPhones. Subscribe to the MacRumors YouTube channel for more ...
maxresdefault

Where's the New Apple TV?

Monday December 22, 2025 11:30 am PST by
Apple hasn't updated the Apple TV 4K since 2022, and 2025 was supposed to be the year that we got a refresh. There were rumors suggesting Apple would release the new Apple TV before the end of 2025, but it looks like that's not going to happen now. Subscribe to the MacRumors YouTube channel for more videos. Bloomberg's Mark Gurman said several times across 2024 and 2025 that Apple would...
Mac Pro Feature Blue

What's Happening With the Mac Pro?

Wednesday December 31, 2025 9:59 am PST by
Apple hasn't updated the Mac Pro since 2023, and according to recent rumors, there's no update coming in the near future. In fact, Apple might be finished with the Mac Pro. Bloomberg recently said that the Mac Pro is "on the back burner" and has been "largely written off" by Apple. Apple apparently views the more compact Mac Studio as the ideal high-end pro-level desktop, and it has almost...
macbook air march 2020

Apple Says Final Intel MacBook Air and Apple Watch Series 5 Now 'Vintage'

Wednesday December 31, 2025 8:39 am PST by
Apple today added the final 13-inch MacBook Air powered by Intel processors, the Apple Watch Series 5, and additional products to its vintage products list. The iPhone 11 Pro was also added to the list after the iPhone 11 Pro Max was added back in September. The full list of products added to Apple's vintage and obsolete list today: MacBook Air (Retina, 13-inch, 2020) iPhone 8 Plus 128GB ...

Top Rated Comments

ArPe Avatar
63 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
63 months ago
Why are macOS bug fix updates so giant to download compared to their iOS counterparts?
Score: 15 Votes (Like | Disagree)
JBinATL Avatar
63 months ago
All of these point updates are making it a real joy in the enterprise.
Score: 12 Votes (Like | Disagree)
SkyRom Avatar
63 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
63 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
63 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)