Apple Releases macOS Big Sur 11.5.1 With Security Updates - MacRumors
Skip to Content

Apple Releases macOS Big Sur 11.5.1 With Security Updates

Apple today released macOS Big Sur 11.5.1, a minor bug fix update that comes close to one week after the launch of macOS Big Sur 11.5.

macOS Big Sur Feature Triad
The new ‌‌‌‌‌‌macOS Big Sur‌‌‌‌‌ 11.5.1 update can be downloaded for free on all eligible Macs using the Software Update section of System Preferences.

According to Apple, macOS Big Sur 11.5.1 brings important security updates and is recommended for all users.

Related Forum: macOS Big Sur

Popular Stories

Apple Event Logo

Apple's Next Era Begins September 1

Thursday May 7, 2026 10:36 am PDT by
Apple recently announced that Tim Cook will be stepping down as CEO later this year, after 15 years of leading the company. Effective September 1, Apple's hardware engineering chief John Ternus will become the company's next CEO, while Cook will become executive chairman of Apple's board of directors. In his new role, Apple said Cook will assist with "certain aspects" of the company,...
Instagram Feature 2

PSA: Instagram Encrypted Messaging Ends on Friday, May 8

Tuesday May 5, 2026 8:24 am PDT by
Instagram will remove end-to-end encryption for direct messages between users from May 8, 2026. When the date comes around, Meta will potentially be able to see the contents of all messages between users on the social media platform. Encrypting messages has been an optional feature in Instagram since 2023, but in March of this year the social media platform quietly updated a help page to say ...
Apple Event Logo

Apple Just Released a New Accessory

Monday May 4, 2026 8:13 am PDT by
Apple today released a new Pride Edition Sport Loop for the Apple Watch. The band features a rainbow design with 11 colors of woven nylon yarns. The new Pride Edition Sport Loop is available to order now on Apple.com and in the Apple Store app in 40mm, 42mm, and 46mm sizes, and it will be available at Apple Store locations starting later this week. In the U.S., the band costs $49. There...

Top Rated Comments

macdos Avatar
63 months ago
…a minor bug fix update… 3.3 GB?
Score: 9 Votes (Like | Disagree)
Konigi Avatar
63 months ago
I'm glad macOS updates are no longer called "10.16.5 Supplemental Update 2" 🤣
Score: 8 Votes (Like | Disagree)
TheYayAreaLiving 🎗️ Avatar
63 months ago
Sweet! Apple is staying on top of it :)
Score: 8 Votes (Like | Disagree)
63 months ago
Apple is becoming a bigger headache in the enterprise space than Windows.
Score: 7 Votes (Like | Disagree)
DaveMcM76 Avatar
63 months ago
It's available here in the UK - late 2013 MBP so likely to be one of the last updates it gets as Monterey isn't supported :(



Attachment Image
Score: 7 Votes (Like | Disagree)
adamw Avatar
63 months ago
Security Updates are a good thing. Hope it fixes all issues people are having.
Score: 6 Votes (Like | Disagree)