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15.7.5 update

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benwiggy

macrumors 68030
Original poster
Software Update has just flagged 15.7.5. Any news on what it contains? Not even Apple's own webpage about security releases lists it yet.
 
If the first beta is an RC, then there's very little to distinguish it from an actual release!
 
bogdanw said:
You can see in the last link that there have been 3 RC builds for each release since 15.7.2
Click to expand...
Almost as if it were intended! 🤣

But RCs don't show up labelled as "betas", so without the benefit of confirmation from a third party, there's little way of knowing whether it's a release or just a beta masquerading as an RC.
 
benwiggy said:
Almost as if it were intended! 🤣
But RCs don't show up labelled as "betas", so without the benefit of confirmation from a third party, there's little way of knowing whether it's a release or just a beta masquerading as an RC.
Click to expand...
Release Candidate is the intended release - if you like an early release. So looks like a release, not a beta.
RCs are only be offered to Macs with betas enabled, so there is no confusion for most users.

The confusion for beta testers is that 'betas' of outdated macOS (like Sequoia) seemed to be labelled as RCs. I can only assume that none of them have any of the extra logging that may be present in betas.

Is the build number for your RC the same as that for today's release of 15.7.5 (24G617)? If so, you won't be offered it again and the next macOS to be offered will a Beta/RC of 15.7.6.
 
Last edited:
bogdanw said:
The fourth beta: build 24G623 (Release Candidate 4)
https://betawiki.net/wiki/MacOS_Sequoia#15.7.5
InstallAssistant.pkg link
https://swcdn.apple.com/content/downloads/38/19/047-94543-A_FPC2W7CIRW/sirjwdrvsgfn66nbfynj3sjek6epcoqmqt/InstallAssistant.pkg
Click to expand...
New release of 15.7.5 24G624, just installed, on a MBA M2. May still be an RC as I didn't see any formal announcement. Build is only up by 1 from 24G623! No changes noticable.
 
Hello,

I started the 15.7.5 update but noticed it’s ~15GB, which seems unusually large for a minor update, so I paused it since that raised eyebrows. I’m just trying to stay on the latest (stable) Sequoia, for now

Noob question: My understanding is that this size suggests a full OS installer rather than a delta update. Why would macOS deliver a full installer in this case, when previous minor updates were much smaller? (At least from what I recall aren’t they typically only a couple GB?) whether beta or official release?

For context, I have “Developer Beta” enabled under Beta Updates in System Settings.

Is this expected behavior? The link provided in system preferences just goes to the Apple software update list but nothing for this update is there
 
Sorry to double post: does anyone know if this may contain fixes that macOS 26 has (mentioned in this article?

www.macrumors.com

Apple Releases Background Security Improvement Update for macOS Tahoe 26.3.1, iOS 26.3.1, and iPadOS 26.3.1

Apple today released the first Background Security Improvement (BSI) update, replacing the rapid security updates that it used to seed out a few years ago. The first BSI updates address a WebKit vulnerability that could allow maliciously crafted web content to bypass Same Origin Policy. There's...
www.macrumors.com www.macrumors.com

Thanks
 
At the moment, Apple has no release notes for Safari 26.3.1 https://developer.apple.com/documentation/safari-release-notes

Even if the WebKit vulnerability CVE-2026-20643 was fixed in Safari 26.3.1, macOS Sequoia still needs to be updated to fix it in /System/Library/Frameworks/WebKit.framework.

When it will be released, 15.7.5 will probably contain the fixes for CVE-2026-20643.

The fifth beta has been released 15.7.5 build 24G624 (Release Candidate 5)
https://betawiki.net/wiki/MacOS_Sequoia#15.7.5
The full installer is not available yet.
 
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bogdanw said:
At the moment, Apple has no release notes for Safari 26.3.1 https://developer.apple.com/documentation/safari-release-notes

Even if the WebKit vulnerability CVE-2026-20643 was fixed in Safari 26.3.1, macOS Sequoia still needs to be updated to fix it in /System/Library/Frameworks/WebKit.framework.

When it will be released, 15.7.5 will probably contain the fixes for CVE-2026-20643.

The fifth beta has been released 15.7.5 build 24G624 (Release Candidate 5)
https://betawiki.net/wiki/MacOS_Sequoia#15.7.5
The full installer is not available yet.
Click to expand...
I am running 15.7.5 24G624 and I have Safari Version 26.4 (20624.1.16.18.1) dated March 10. I don't remember exactly what update that corresponds to, but I seem to remember Safari being updated after one of the earlier Sequoia updates, either 24G517 or 24G612.
Do you know if that version contain the fix you mentioned that may be associated with Safari 26.3.1?
In general, I don't use Safari, it is waiting in the background, but gets used rarely.
 
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neurophysicist said:
Hello,

I started the 15.7.5 update but noticed it’s ~15GB, which seems unusually large for a minor update, so I paused it since that raised eyebrows. I’m just trying to stay on the latest (stable) Sequoia, for now

Noob question: My understanding is that this size suggests a full OS installer rather than a delta update. Why would macOS deliver a full installer in this case, when previous minor updates were much smaller? (At least from what I recall aren’t they typically only a couple GB?) whether beta or official release?

For context, I have “Developer Beta” enabled under Beta Updates in System Settings.

Is this expected behavior? The link provided in system preferences just goes to the Apple software update list but nothing for this update is there
Click to expand...

Wait for Delta release next week...it should come out with Tahoe .4
 
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LeVan said:
I am running 15.7.5 24G624 and I have Safari Version 26.4 (20624.1.16.18.1) dated March 10. I don't remember exactly what update that corresponds to, but I seem to remember Safari being updated after one of the earlier Sequoia updates, either 24G517 or 24G612.
Do you know if that version contain the fix you mentioned that may be associated with Safari 26.3.1?
In general, I don't use Safari, it is waiting in the background, but gets used rarely.
Click to expand...
Apple has not updated the release notes for Safari 26.4 either “Released February 16, 2026 — 26.4 beta (20624.11.11)”https://developer.apple.com/documentation/safari-release-notes/safari-26_4-release-notes

As the fix was released as a Background Security Improvement on 17 Match, I doubt that a beta version of Safari from 10 March would include such a security fix.
 
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