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 Roundups: iOS 18, iPadOS 18, macOS Sequoia
Related Forums: iOS 18, iPadOS 18, macOS Sequoia

Popular Stories

apple watch ultra yellow

What's Next for the Apple Watch Ultra 3 and Apple Watch SE 3

Friday April 25, 2025 2:44 pm PDT by
This week marks the 10th anniversary of the Apple Watch, which launched on April 24, 2015. Yesterday, we recapped features rumored for the Apple Watch Series 11, but since 2015, the Apple Watch has also branched out into the Apple Watch Ultra and the Apple Watch SE, so we thought we'd take a look at what's next for those product lines, too. 2025 Apple Watch Ultra 3 Apple didn't update the...
iphone 16 display

iPhone 17's Scratch Resistant Anti-Reflective Display Coating Canceled

Monday April 28, 2025 12:48 pm PDT by
Apple may have canceled the super scratch resistant anti-reflective display coating that it planned to use for the iPhone 17 Pro models, according to a source with reliable information that spoke to MacRumors. Last spring, Weibo leaker Instant Digital suggested Apple was working on a new anti-reflective display layer that was more scratch resistant than the Ceramic Shield. We haven't heard...
iPhone 17 Air Pastel Feature

iPhone 17 Reaches Key Milestone Ahead of Mass Production

Monday April 28, 2025 8:44 am PDT by
Apple has completed Engineering Validation Testing (EVT) for at least one iPhone 17 model, according to a paywalled preview of an upcoming DigiTimes report. iPhone 17 Air mockup based on rumored design The EVT stage involves Apple testing iPhone 17 prototypes to ensure the hardware works as expected. There are still DVT (Design Validation Test) and PVT (Production Validation Test) stages to...
Beyond iPhone 13 Better Blue

20th Anniversary iPhone Likely to Be Made in China Due to 'Extraordinarily Complex' Design

Monday April 28, 2025 4:29 am PDT by
Apple will likely manufacture its 20th anniversary iPhone models in China, despite broader efforts to shift production to India, according to Bloomberg's Mark Gurman. In 2027, Apple is planning a "major shake-up" for the iPhone lineup to mark two decades since the original model launched. Gurman's previous reporting indicates the company will introduce a foldable iPhone alongside a "bold"...
iPhone 17 Air Pastel Feature

iPhone 17 Air Launching Later This Year With These 16 New Features

Thursday April 24, 2025 8:24 am PDT by
While the so-called "iPhone 17 Air" is not expected to launch until September, there are already plenty of rumors about the ultra-thin device. Overall, the iPhone 17 Air sounds like a mixed bag. While the device is expected to have an impressively thin and light design, rumors indicate it will have some compromises compared to iPhone 17 Pro models, including only a single rear camera, a...
iPhone 17 Pro Blue Feature Tighter Crop

iPhone 17 Pro Launching Later This Year With These 13 New Features

Wednesday April 23, 2025 8:31 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. Below, we recap key changes rumored for the iPhone 17 Pro models as of April 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone ...

Top Rated Comments

ignatius345 Avatar
23 weeks 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
23 weeks ago
Do these vulnerabilities affect iOS 17.x.x and macOS 14.x.x?
Score: 11 Votes (Like | Disagree)
Yvan256 Avatar
23 weeks 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
23 weeks 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
23 weeks 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
23 weeks 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)