Apple Releases macOS Catalina 10.15.7 Supplemental Update With Security Fixes

by

Apple today released a supplemental update for macOS Catalina 10.15.7, introducing security fixes. The macOS 10.15.7 Supplemental Update comes more than a month after the release of macOS Catalina 10.15.7.

Catalina10
The ‌‌‌‌macOS Catalina‌‌‌‌ 10.15.7 Supplemental Update can be downloaded from the Mac App Store using the Update feature in the System Preferences app.

According to Apple's release notes, the Supplemental Update improves the security of macOS and is recommended for all users. An Apple support document outlines several vulnerabilities that that have been addressed, including those that leave the Mac vulnerable to malicious fonts and applications.

macOS Catalina will soon be replaced by macOS Big Sur, which is in the final stages of beta testing and could be released as soon as next week.

Related Forum: macOS Catalina

Popular Stories

Tim Cook WWDC 2018

Report: Tim Cook to Step Down as Apple CEO 'as Soon as Next Year'

Saturday November 15, 2025 2:40 pm PST by
Apple is preparing for Tim Cook to step down as CEO of the company "as soon as next year," according to the Financial Times. The company's board of directors and senior executives "recently intensified preparations for Cook to hand over the reins," the report said. While the report said that Apple is unlikely to name a new CEO before its next earnings report in late January, it went on to ...
Read Full Article • 465 comments
AirPods Pro Firmware Feature

Apple Releases New Firmware for AirPods Pro 2, AirPods Pro 3, and AirPods 4

Thursday November 13, 2025 11:35 am PST by
Apple today released new firmware designed for the AirPods Pro 3, the AirPods 4, and the prior-generation AirPods Pro 2. The AirPods Pro 3 firmware is 8B25, while the AirPods Pro 2 and AirPods 4 firmware is 8B21, all up from the prior 8A358 firmware released in October. There's no word on what's include in the updated firmware, but the AirPods Pro 2, AirPods 4 with ANC, and AirPods Pro 3...
Read Full Article • 68 comments
iOS 26

Everything New in iOS 26.2 Beta 3

Monday November 17, 2025 3:20 pm PST by
Apple provided developers with the third beta of an upcoming iOS 26.2 update, and there are still new features that are being added with each beta that we get. We've rounded up all of the changes that Apple made in beta 3. AirDrop Apple added new AirDrop functionality, providing a way for two people to share files temporarily without having to add one another as contacts. iOS 26.2...
Read Full Article • 20 comments
best early black friday deals

Best Black Friday Apple Deals Live Now - Save on AirPods, iPads, and Apple Watches

Saturday November 15, 2025 1:45 pm PST by
We're officially in the month of Black Friday, which will take place on Friday, November 28 in 2025. As always, this will be the best time of the year to shop for great deals, including popular Apple products like AirPods, iPad, Apple Watch, and more. In this article, the majority of the discounts will be found on Amazon. Note: MacRumors is an affiliate partner with some of these vendors. When ...
Read Full Article • 3 comments
iPhone Pocket Short

iPhone Pocket Now Available to Order, But Already Selling Out

Friday November 14, 2025 6:20 am PST by
Apple recently teamed up with Japanese fashion brand ISSEY MIYAKE to create the iPhone Pocket, a limited-edition knitted accessory designed to carry an iPhone. iPhone Pocket is available to order on Apple's online store starting today, in the United States, France, China, Italy, Japan, Singapore, South Korea, and the United Kingdom. However, it is already completely sold out in the United...
Read Full Article • 200 comments
Apple Wallet ID Illinois

iPhone Driver's License Feature Launching in Illinois

Tuesday November 18, 2025 8:47 am PST by
In select U.S. states, residents can add their driver's license or state ID to the Wallet app on the iPhone and Apple Watch, providing a convenient and contactless way to display proof of identity or age at select airports and businesses, and in select apps. Starting this Wednesday, November 19, the feature will be available to residents of Illinois. The announcement confirmed that the...
Read Full Article • 59 comments
apple silicon mac lineup 2024 feature purple m5

Apple's 2026 Mac Plans

Friday November 14, 2025 3:23 pm PST by
Most of Apple's Macs are slated to get M5 chips across 2026, and there's a possibility we'll even see the first M6 chips toward the end of the year. Updates are planned for everything from the MacBook Air to the Mac Studio. MacBook Air (Early 2026) The MacBook Air will be one of the first Macs to get a 2026 refresh, with an update planned for the first few months of the year. The MacBook...
Read Full Article • 157 comments
CarPlay Liquid Glass Dark

Here's When Tesla is Expected to Add Support for Apple CarPlay

Sunday November 16, 2025 6:49 am PST by
In his Power On newsletter today, Bloomberg's Mark Gurman reiterated that Tesla plans to add Apple CarPlay support to its vehicles "in the coming months." This is easily the biggest news for the regular version of CarPlay in years, should Tesla actually follow through with offering the system in its vehicles. As noted by Gurman, this would be a stunning reversal for Tesla and its CEO Elon ...
Read Full Article • 114 comments
tvOS 26 Profiles

tvOS 26.2 Adds a Useful New Feature to Your Apple TV

Friday November 14, 2025 10:02 am PST by
Starting with the upcoming tvOS 26.2 update, currently in beta, additional profiles created on the Apple TV no longer require their own Apple Account. In the Settings app on the Apple TV, under Profiles and Accounts, anyone can create a new profile by simply entering a name and indicating whether the profile is for a kid. The profile will be associated with the primary user's Apple Account,...
Read Full Article
Apple Sports App Preview Feature

Apple Sports App on iPhone Now Available in More European Countries

Monday November 17, 2025 6:27 am PST by
The free Apple Sports app on the iPhone was released in additional European countries today, including Belgium, Croatia, Czechia, the Netherlands, Luxembourg, Poland, Hungary, Denmark, Finland, Norway, Sweden, Switzerland, Slovakia, Slovenia, Serbia, Greece, Estonia, Latvia, Romania, Ukraine, and others. The app was already available in the U.S., the U.K., Canada, Austria, France, Germany,...
Read Full Article • 22 comments

Top Rated Comments

TVreporter Avatar
TVreporter
66 months ago
What if you're still on Mojave because it runs so smoothly and the endless stories of the dumpster fire that's Catalina are a deterrent not to update?
Score: 25 Votes (Like | Disagree)
dspdoc Avatar
dspdoc
66 months ago
I think a lot of people are simply hating on Catalina out of habit now. It’s sad.
Score: 20 Votes (Like | Disagree)
ghanwani Avatar
ghanwani
66 months ago
Why don't they have a minor version number instead of calling it a supplemental update?

I just updated and there is no way to tell whether or not the update actually happened.

Edit: @Unsupported showed me ('https://forums.macrumors.com/threads/apple-releases-macos-catalina-10-15-7-supplemental-update-with-security-fixes.2265661/post-29169450') how to find it. That can also be found under
About This Mac -> System Report -> Software
But having a minor version number would be so much easier.

Attachment Image
Score: 20 Votes (Like | Disagree)
jonnysods Avatar
jonnysods
66 months ago

What if you're still on Mojave because it runs so smoothly and the endless stories of the dumpster fire that's Catalina are a deterrent not to update?
Catalina is a lot better than it used to be. Mojave will always be my fav since Snow Leopard though.
Score: 17 Votes (Like | Disagree)
luvbug Avatar
luvbug
66 months ago

Mojave has anther year of security updates yet, no need to migrate to either of the disasters that are Apple's last two OS releases.
So, you pronounce Big Sur a disaster, even though it hasn't been released yet? Another very objective post on MR /s
Score: 15 Votes (Like | Disagree)
posguy99 Avatar
posguy99
66 months ago

What if you're still on Mojave because it runs so smoothly and the endless stories of the dumpster fire that's Catalina are a deterrent not to update?
Mojave has anther year of security updates yet, no need to migrate to either of the disasters that are Apple's last two OS releases.
Score: 12 Votes (Like | Disagree)
Read All Comments