Update Now: iOS 18.4.1 and macOS Sequoia 15.4.1 Address Actively Exploited Vulnerabilities

The iOS 18.4.1, iPadOS 18.4.1, macOS Sequoia 15.4.1, tvOS 18.4.1, and visionOS 2.4.1 updates that Apple released today include fixes for two major vulnerabilities, which means you should install the new software as soon as you can.

bug security vulnerability issue fix larry
According to Apple, it is aware of reports that these vulnerabilities may have been actively exploited in the wild. Apple says that the security flaws were potentially used in an "extremely sophisticated attack against specific targeted individuals."

One of the issues impacts CoreAudio, and involves a maliciously crafted audio file. Processing the audio stream in the media file could result in code execution. Apple fixed the memory corruption issue with improved bounds checking.

The other vulnerability affected pointer authentication code, and an attacker with arbitrary read and write capability could bypass the Pointer Authentication features that prevent memory from being tampered with. Apple removed the vulnerable code to prevent the exploit from working.

All of the updates are available today, and focus primarily on the security fixes. iOS 18.4.1 also addresses an issue that could prevent some wireless CarPlay setups from working properly in select vehicles.

Related Forums: iOS 18, iPadOS 18, macOS Sequoia

Popular Stories

iPhone Pocket Short

iPhone Pocket is Now Completely Sold Out Worldwide

Tuesday November 25, 2025 7:16 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. However, it is now completely sold out in all countries where it was released. iPhone Pocket became available to order on Apple's online store starting Friday, November 14, in the United States, France, China, Italy, Japan, Singapore, ...
New Intel Logo

Apple and Intel Rumored to Partner on Mac Chips Again in a New Way

Friday November 28, 2025 7:33 am PST by
While all Macs are now powered by Apple's custom-designed chips, a new rumor claims that Apple may rekindle its partnership with Intel, albeit in a new and limited way. Apple supply chain analyst Ming-Chi Kuo today said Intel is expected to begin shipping Apple's lowest-end M-series chip as early as mid-2027. Kuo said Apple plans to utilize Intel's 18A process, which is the "earliest...
iphone black friday gold

The Best Black Friday iPhone Deals Still Available

Friday November 28, 2025 6:24 am PST by
Cellular carriers have always offered big savings on the newest iPhone models during the holidays, and Black Friday 2025 sales have kicked off at AT&T, Verizon, T-Mobile, and more. Right now we're tracking notable offers on the iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, and iPhone Air. For even more savings, keep an eye on older models during the holiday shopping season. Note: MacRumors is...
apple store down feature

Here's Why the Apple Store is Going Down

Thursday November 27, 2025 1:01 pm PST by
Apple's online store is going down for a few hours on a rolling country-by-country basis right now, but do not get your hopes up for new products. Apple takes its online store down for a few hours ahead of Black Friday every year to tease/prepare for its annual gift card offer with the purchase of select products. The store already went down and came back online in Australia and New Zealand, ...
streaming black friday 2025

Best Black Friday Streaming Deals - Save Big on Apple TV, Disney+, Hulu, and More

Thursday November 27, 2025 1:14 pm PST by
We've been focusing on deals on physical products over the past few weeks, but Black Friday is also a great time of year to purchase a streaming membership. Some of the biggest services have great discounts for new and select returning members this week, including Apple TV, Disney+, Hulu, Paramount+, Peacock, and more. Note: MacRumors is an affiliate partner with some of these vendors. When...
Cyber Monday Deals 2025

Best Cyber Monday Apple Deals Include Big Discounts on AirPods, Apple Watch, and More

Sunday November 30, 2025 7:33 am PST by
Cyber Monday is here, and you can find popular Apple products like AirPods, iPad, Apple Watch, and more at all-time low prices. 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 you click a link and make a purchase, we may receive a small payment, which helps us keep the site running....
iphone air camera

iPhone Air Flop Sparks Industry Retreat From Ultra-Thin Phones

Thursday November 27, 2025 3:14 am PST by
Apple's disappointing iPhone Air sales are causing major Chinese mobile vendors to scrap or freeze their own ultra-thin phone projects, according to reports coming out of Asia. Since the ‌iPhone Air‌ launched in September, there have been reports of poor sales and manufacturing cuts, while Apple's supply chain has scaled back shipments and production. Apple supplier Foxconn has...
studio display purple february

M5 iPad Pro Could Hint at New Studio Display Feature

Sunday November 30, 2025 10:30 am PST by
The updated specs of the M5 iPad Pro may point toward a major new feature for Apple's next-generation Studio Display expected in early 2026. Apple's latest iPad Pro debuted last month and contains one display-related change that stands out: it can now drive external monitors at up to 120Hz with Adaptive Sync. The feature should deliver lower latency, smoother motion, and fewer visual...

Top Rated Comments

Havoc035 Avatar
8 months ago

Instead of 'this affected only a small amount/handful of users' they changed their text to sophisticated attacks against specific individuals. Classic Apple Marketing.
Sure, but this description is also arguably better for describing state sponsored targeted attacks.
Score: 14 Votes (Like | Disagree)
VictoryHighway Avatar
8 months ago

I hope some day this type of updates are released as a “rapid security response”
Yeah. Whatever happened to those?
Score: 13 Votes (Like | Disagree)
rictus007 Avatar
8 months ago
I hope some day this type of updates are released as a “rapid security response”
Score: 12 Votes (Like | Disagree)
hoodafoo Avatar
8 months ago

Has anyone actually ever been hacked? Still rolling on 16.7.2 on my 14 pro…. You don’t ever see any horror stories of people having their iPhone hacked because they didn’t update. At least I haven’t.
It just means you're not important
Score: 9 Votes (Like | Disagree)
jz0309 Avatar
8 months ago
Obliged.
I like security and bug fixes
Score: 9 Votes (Like | Disagree)
jayducharme Avatar
8 months ago
Weird: after the update, I'm no longer receiving 2-factor authentication texts. I tried rebooting, but no luck. I'm still getting regular messages though.

Never mind. I'm a dope. After the last power-down I forgot to turn my iPhone back on. Everything's working fine.
Score: 6 Votes (Like | Disagree)