Apple Releases macOS High Sierra 10.13.2 Supplemental Update With Spectre Fix

Apple today released a macOS High Sierra 10.13.2 supplemental update, which comes a little more than a month after the initial release of macOS High Sierra 10.13.2.

macOS High Sierra 10.13.2 is a free update for all customers who have a compatible machine. The update can be downloaded using the Software Update function in the Mac App Store.

macOS High Sierra
macOS High Sierra 10.13.2 addresses the "Spectre" vulnerability that was publicized last week. Spectre, along with its sister vulnerability "Meltdown" are serious hardware-based exploits that take advantage of the speculative execution mechanism of a CPU, allowing hackers to gain access to sensitive information.

While Meltdown was addressed in the initial macOS High Sierra 10.13.2 update, Apple said it would introduce a mitigation for Spectre in macOS and iOS early this week. There is no hardware fix for Spectre, so Apple is addressing the vulnerability using Safari-based software workarounds.

There's also a Safari 11.0.2 update available for macOS Sierra 10.12.6 and OS X El Capitan 10.11.6 that is designed to mitigate the effects of the Spectre vulnerability. Customers running macOS Sierra and OS X El Capitan should download the new version of Safari to make sure their machines are protected.

Related Forum: macOS High Sierra

Popular Stories

iPhone 17 Pro in Hand Feature Lowgo

iPhone 17 Pro Coming Soon With These 14 New Features

Friday July 4, 2025 1:05 pm PDT by
Apple's next-generation iPhone 17 Pro and iPhone 17 Pro Max are just over two months away, and there are plenty of rumors about the devices. Below, we recap key changes rumored for the iPhone 17 Pro models. Latest Rumors These rumors surfaced in June and July:Apple logo repositioned: Apple's logo may have a lower position on the back of the iPhone 17 Pro models, compared to previous...
iphone 16 pro models 1

Here's How the iPhone 17 Pro Max Will Compare to the iPhone 17 Pro

Saturday July 5, 2025 1:00 pm PDT by
Apple should unveil the iPhone 17 series in September, and there might be one bigger difference between the Pro and Pro Max models this year. As always, the Pro Max model will be larger than the Pro model:iPhone 17 Pro: 6.3-inch display iPhone 17 Pro Max: 6.9-inch displayGiven the Pro Max is physically larger than the Pro, it has more internal space, allowing for a larger battery and...
iPhone Car Key Kia

Here's Which Vehicles Offer iPhone Car Keys

Sunday July 6, 2025 3:03 pm PDT by
In 2020, Apple added a digital car key feature to its Wallet app, allowing users to lock, unlock, and start a compatible vehicle with an iPhone or Apple Watch. The feature is currently offered by select automakers, including Audi, BMW, Hyundai, Kia, Genesis, Mercedes-Benz, Volvo, and a handful of others, and it is set to expand further. Apple has a web page with a list of vehicle models that ...
imac video apple feature

Apple Launching These 15+ Products Later This Year

Sunday July 6, 2025 8:05 am PDT by
The calendar has turned to July, meaning that 2025 is now more than half over. And while the summer months are often quiet for Apple, the company still has more than a dozen products coming later this year, according to rumors. Below, we have outlined at least 15 new Apple products that are expected to launch later this year, along with key rumored features for each. iPhone 17 Series iPho...
iOS 26 Feature

Everything New in iOS 26 Beta 3

Monday July 7, 2025 1:20 pm PDT by
Apple is continuing to refine and update iOS 26, and beta three features smaller changes than we saw in beta 2, plus further tweaks to the Liquid Glass design. Apple is gearing up for the next phase of beta testing, and the company has promised that a public beta is set to come out in July. Transparency In some apps like Apple Music, Podcasts, and the App Store, Apple has toned down the...
iPhone 17 Pro in Hand Feature Lowgo

iPhone 17 Pro to Reverse iPhone X Design Decision

Monday July 7, 2025 9:46 am PDT by
Since the iPhone X in 2017, all of Apple's highest-end iPhone models have featured either stainless steel or titanium frames, but it has now been rumored that this design decision will be coming to an end with the iPhone 17 Pro models later this year. In a post on Chinese social media platform Weibo today, the account Instant Digital said that the iPhone 17 Pro models will have an aluminum...
iphone 17 pro render majin bu

New iPhone 17 Pro Renders Highlight Apple Logo and MagSafe Design Changes

Sunday July 6, 2025 8:43 pm PDT by
New renders today provide the best look yet relocated Apple logo and redesigned MagSafe magnet array of the iPhone 17 Pro and iPhone 17 Pro Max. Image via Majin Bu. Several of the design changes coming to the iPhone 17 Pro model have been rumored for some time, such as the elongated camera bump that spans the full width of the device, with the LiDAR Scanner and flash moving to the right side. ...
Prime Day 25 Feature Warm Triad

The Best Early Prime Day Deals on Apple Products

Saturday July 5, 2025 7:22 am PDT by
Amazon is soon to be back with its annual summertime Prime Day event, lasting for four days from July 8-11, the longest Prime Day yet. As it does every year, Prime Day offers shoppers a huge selection of deals across Amazon's storefront, and there are already many deals you can get on sale ahead of the event. Note: MacRumors is an affiliate partner with Amazon. When you click a link and make a ...
airpods pro 2

AirPods Pro 3 to Help Maintain Apple's Place in Earbud Market Amid Increasing Low-Cost Competition

Thursday July 3, 2025 7:25 am PDT by
Apple's position as the dominant force in the global true wireless stereo (TWS) earbud market is expected to continue through 2025, according to Counterpoint Research. The forecast outlines a 3% year-over-year increase in global TWS unit shipments for 2025, signaling a transition from rapid growth to a more mature phase for the category. While Apple is set to remain the leading brand by...

Top Rated Comments

Sheza Avatar
98 months ago
Lol I'm not getting High Sierra. PoS full of bugs and performance issues.
Score: 11 Votes (Like | Disagree)
coolfactor Avatar
98 months ago
A safari-based workaround? Please...
Yah, and other browsers are responsible for their own fixes.

With browsers fixed, Spectre can’t be exploited via a web page.
Score: 10 Votes (Like | Disagree)
Rudy69 Avatar
98 months ago
Can't wait to see the benchmarks!
Score: 9 Votes (Like | Disagree)
MacGekko Avatar
98 months ago
This video about 3:30 onwards has some good stuff (the stuff prior to 3:30 is about the root bug)



Another example of a graphic glitch:
Except when you read the comments it seems there are logical explanations for this performance and after the new file system is indexed most report their Mac computers running faster on High Sierra.

And a recent video update explained that when the Youtube creator installed the latest High Sierra update, 99 percent of his problems were fixed, what a waste of time.
Score: 8 Votes (Like | Disagree)
pwm86 Avatar
98 months ago
Geekbench results for
iMac (27-inch Retina Late 2015)
Pre update:
Single-Core [B]Score [/B]5302 Multi-Core Score 17899
Geekbench 4.2.0 Tryout for Mac OS X x86 (64-bit)
Upload Date November 10 2017 07:52 AM

Post update is better!
Single-Core [B]Score [/B]5310 Multi-Core Score 18162
Geekbench 4.2.0 Tryout for Mac OS X x86 (64-bit)
Upload Date January 08 2018 06:47 PM
Score: 8 Votes (Like | Disagree)
qawes Avatar
98 months ago
How dare they abandon people with machines more then 8 years old. :rolleyes:
I'm not aware of machines that can support Yosemite and cannot support El Capitan or Sierra.

There are a lot of people that cannot upgrade to High Sierra yet because some gear in the pro audio network isn't yet fully optimised to it, gear that is worth much, much more than a Mac that comes with High Sierra out of the box.

Official compatibility and real world stability are two different things in this world, that's why we stay behind one or two versions.

It is not our personal preference that Apple "has" to release a new version each year and we need to have the latest iMessage or whatever features, we would gladly prefer the strategy that was applied in the Tiger/Leopard/Snow Leopard days. We need security and a rock solid system, that's why we buy Apple products in the first place, right?
Score: 8 Votes (Like | Disagree)