Make Sure to Update: iOS 18.1.1 and macOS Sequoia 15.1.1 Fix Actively Exploited Vulnerabilities

The iOS 18.1.1, iPadOS 18.1.1, and macOS Sequoia 15.1.1 updates that Apple released today address JavaScriptCore and WebKit vulnerabilities that Apple says have been actively exploited on some devices.

bug security vulnerability issue fix larry
With the JavaScriptCore vulnerability, processing maliciously crafted web content could lead to arbitrary code execution. The WebKit vulnerability had the same issue with maliciously crafted web content, and it could lead to a cross site scripting attack.

Apple says that it is aware of reports that these two issues may have been actively exploited on Intel-based Mac systems. While the vulnerabilities are only known to have impacted older Macs, other devices are vulnerable to attack because they have the same security flaws.

For that reason, it is a good idea to update your devices to the latest software as soon as possible.

Related Forums: iOS 18, iPadOS 18, macOS Sequoia

Popular Stories

iOS 26

When Will Apple Release iOS 26.2?

Monday December 1, 2025 4:37 pm PST by
We're getting closer to the launch of the final major iOS update of the year, with Apple set to release iOS 26.2 in December. We've had three betas so far and are expecting a fourth beta or a release candidate this week, so a launch could follow as soon as next week. Past Launch Dates Apple's past iOS x.2 updates from the last few years have all happened right around the middle of the...
ios 18 to ios 26 upgrade

Apple Pushes iPhone Users Still on iOS 18 to Upgrade to iOS 26

Tuesday December 2, 2025 11:09 am PST by
Apple is encouraging iPhone users who are still running iOS 18 to upgrade to iOS 26 by making the iOS 26 software upgrade option more prominent. Since iOS 26 launched in September, it has been displayed as an optional upgrade at the bottom of the Software Update interface in the Settings app. iOS 18 has been the default operating system option, and users running iOS 18 have seen iOS 18...
maxresdefault

iPhone Fold: Launch, Pricing, and What to Expect From Apple's Foldable

Monday December 1, 2025 3:00 am PST by
Apple is expected to launch a new foldable iPhone next year, based on multiple rumors and credible sources. The long-awaited device has been rumored for years now, but signs increasingly suggest that 2026 could indeed be the year that Apple releases its first foldable device. Subscribe to the MacRumors YouTube channel for more videos. Below, we've collated an updated set of key details that ...
iphone 17 cyber

iPhone 17 Demand Is Breaking Apple's Sales Records

Tuesday December 2, 2025 9:44 am PST by
Apple's iPhone 17 lineup is selling well enough that Apple is on track to ship more than 247.4 million total iPhones in 2025, according to a new report from IDC. Total 2025 shipments are forecast to grow 6.1 percent year over year due to iPhone 17 demand and increased sales in China, a major market for Apple. Overall worldwide smartphone shipments across Android and iOS are forecast to...
iOS 26

Apple Seeds iOS 26.2 and iPadOS 26.2 Release Candidates to Developers and Public Beta Testers

Wednesday December 3, 2025 10:33 am PST by
Apple today seeded the release candidate versions of upcoming iOS 26.2 and iPadOS 26.2 updates to developers and public beta testers, with the software coming two weeks after Apple seeded the third betas. The release candidates represent the final versions of iOS 26.2 and iPadOS 26.2 that will be provided to the public if no further bugs are found during this final week of testing....
Touchscreen MacBook Feature

Here Are the Four MacBooks Apple Is Expected to Launch Next Year

Monday December 1, 2025 5:00 am PST by
2026 could be a bumper year for Apple's Mac lineup, with the company expected to announce as many as four separate MacBook launches. Rumors suggest Apple will court both ends of the consumer spectrum, with more affordable options for students and feature-rich premium lines for users that seek the highest specifications from a laptop. Below is a breakdown of what we're expecting over the next ...
Photos App Icon Liquid Glass

John Gruber Shares Scathing Commentary About Apple's Departing Software Design Chief

Thursday December 4, 2025 9:30 am PST by
In a statement shared with Bloomberg on Wednesday, Apple confirmed that its software design chief Alan Dye will be leaving. Apple said Dye will be succeeded by Stephen Lemay, who has been a software designer at the company since 1999. Meta CEO Mark Zuckerberg announced that Dye will lead a new creative studio within the company's AR/VR division Reality Labs. On his blog Daring Fireball,...
iphone air camera

iPhone Air's Resale Value Has Dropped Dramatically, Data Shows

Thursday December 4, 2025 5:27 am PST by
The iPhone Air has recorded the steepest early resale value drop of any iPhone model in years, with new data showing that several configurations have lost almost 50% of their value within ten weeks of launch. According to a ten-week analysis published by SellCell, Apple's latest lineup is showing a pronounced split in resale performance between the iPhone 17 models and the iPhone Air....
chatgpt logo

Sam Altman Declares 'Code Red' for ChatGPT, Delays OpenAI Advertising Plans

Tuesday December 2, 2025 3:30 pm PST by
OpenAI is deprioritizing work on advertising as it focuses on improving the quality of ChatGPT, reports The Information. OpenAI CEO Sam Altman declared a "code red" on Monday, and told employees that the company needs to improve ChatGPT so it doesn't fall behind competitors like Google and Anthropic. Altman said that OpenAI needs to work on personalization for each user, image generation,...
Sad Siri Feature

Apple AI Chief John Giannandrea Retiring After Siri Delays

Monday December 1, 2025 2:16 pm PST by
Apple AI chief John Giannandrea is stepping down from his position and retiring in spring 2026, Apple announced today. Giannandrea will serve as an advisor between now and 2026, with former Microsoft AI researcher Amar Subramanya set to take over as vice president of AI. Subramanya will report to Apple engineering chief Craig Federighi, and will lead Apple Foundation Models, ML research, and ...

Top Rated Comments

ignatius345 Avatar
14 months ago
Whatever happened to those Rapid Security Response patches they were supposed to be able to deploy quickly? Are those being used? I see so many urgent system updates, but I can't remember getting a Rapid Security Response thing automatically.
Score: 20 Votes (Like | Disagree)
TheDailyApple Avatar
14 months ago
Do these vulnerabilities affect iOS 17.x.x and macOS 14.x.x?
Score: 11 Votes (Like | Disagree)
Yvan256 Avatar
14 months ago
And yet, ads on iOS can open a browser without our authorization if we touch anywhere on their full-screen videos, or touch one pixel outside their tiny 16×16 pixels "close" button.

Apple really needs to take over the ads with their own standard interface layered on top of the ads, and prompt us if we really want to open a URL in the browser.
Score: 8 Votes (Like | Disagree)
Lizzard899 Avatar
14 months ago
They didnt fix any bugs....I feel like they just pushed it out for Thanksgiving. IOS 18 has been a mess. Messed up icloud storage (doesn't collabrate the correct number), issues with messages app where messages show up as group text when its only 1 single text between me and 1 other person. The list goes on and on. I bet the notes app isn't fixed either
Score: 7 Votes (Like | Disagree)
winxmac Avatar
14 months ago

Whatever happened to those Rapid Security Response patches they were supposed to be able to deploy quickly? Are those being used? I see so many urgent system updates, but I can't remember getting a Rapid Security Response thing automatically.
iOS 16 was the only major version that had rapid security response
Score: 4 Votes (Like | Disagree)
decafjava Avatar
14 months ago

They didnt fix any bugs....I feel like they just pushed it out for Thanksgiving. IOS 18 has been a mess. Messed up icloud storage (doesn't collabrate the correct number), issues with messages app where messages show up as group text when its only 1 single text between me and 1 other person. The list goes on and on. I bet the notes app isn't fixed either
Not supposed to I understand, just plug a vulnerability.
Score: 4 Votes (Like | Disagree)