Researcher Says Apple Ignored Three Zero-Day Security Vulnerabilities Still Present in iOS 15

In 2019, Apple opened its Security Bounty Program to the public, offering payouts up to $1 million to researchers who share critical iOS, iPadOS, macOS, tvOS, or watchOS security vulnerabilities with Apple, including the techniques used to exploit them. The program is designed to help Apple keep its software platforms as safe as possible.

iPhone 13 Security
In the time since, reports have surfaced indicating that some security researchers are unhappy with the program, and now a security researcher who uses the pseudonym "illusionofchaos" has shared their similarly "frustrating experience."

In a blog post highlighted by Kosta Eleftheriou, the unnamed security researcher said they reported four zero-day vulnerabilities to Apple between March and May of this year, but they said that three of the vulnerabilities are still present in iOS 15 and that one was fixed in iOS 14.7 without Apple giving them any credit.

I want to share my frustrating experience participating in Apple Security Bounty program. I've reported four 0-day vulnerabilities this year between March 10 and May 4, as of now three of them are still present in the latest iOS version (15.0) and one was fixed in 14.7, but Apple decided to cover it up and not list it on the security content page. When I confronted them, they apologized, assured me it happened due to a processing issue and promised to list it on the security content page of the next update. There were three releases since then and they broke their promise each time.

The person said that, last week, they warned Apple that they would make their research public if they didn't receive a response. However, they said Apple ignored the request, leading them to publicly disclose the vulnerabilities.

One of the zero-day vulnerabilities relates to Game Center and allegedly allows any app installed from the App Store to access some user data:

- Apple ID email and full name associated with it

- Apple ID authentication token which allows to access at least one of the endpoints on *.apple.com on behalf of the user

- Complete file system read access to the Core Duet database (contains a list of contacts from Mail, SMS, iMessage, 3rd-party messaging apps and metadata about all user's interaction with these contacts (including timestamps and statistics), also some attachments (like URLs and texts)

- Complete file system read access to the Speed Dial database and the Address Book database including contact pictures and other metadata like creation and modification dates (I've just checked on iOS 15 and this one inaccessible, so that one must have been quietly fixed recently)

The other two zero-day vulnerabilities that are apparently still present in iOS 15, as well as the one patched in iOS 14.7, are also detailed in the blog post.

Apple has not yet commented on the blog post. We'll update this story if the company responds.

Related Forum: iOS 15

Popular Stories

Apple Shopping Event 2025

Apple Announces 2025 Black Friday Event, Here's What You Can Get

Thursday November 20, 2025 6:28 am PST by
Apple's annual four-day Black Friday through Cyber Monday shopping event is returning on Friday, November 28 through Monday, December 1 in many countries, including the United States, Canada, Australia, New Zealand, France, Germany, Italy, Spain, the United Kingdom, Belgium, the Netherlands, Sweden, Thailand, and others. During the shopping event, customers can get an Apple gift card with...
applecare apple care banner

Apple Brings New AppleCare+ Options to India

Tuesday November 18, 2025 8:42 am PST by
Apple today announced an expansion of AppleCare+ coverage in India, with new options for monthly and annual plans, and the addition of Theft and Loss for iPhone for the first time. Options for monthly and annual AppleCare+ plans in India provide more choice and flexibility, allowing users to keep coverage for as long as they require. Apple's vice president of Worldwide iPhone Product...
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...
iPhone 17 Pro Cosmic Orange

10 Reasons to Wait for Next Year's iPhone 18 Pro

Wednesday November 19, 2025 4:00 am PST by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models at the same time, which is why we often get rumored features months ahead of launch. The iPhone 18 series is no different, and we already have a good idea of what to expect for the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth...
ipad mini 7 feature red and blue

iPad Mini 8: Four Major New Features to Expect

Wednesday November 19, 2025 7:50 am PST by
Apple's eighth-generation iPad mini is highly likely to arrive next year, offering a significant refresh of the device with at least four major new features. OLED Display The next-generation version of the iPad mini could feature an OLED display, as part of Apple's plan to expand the display technology across many more of its devices. Apple's first OLED device was the Apple Watch in 2015, ...
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...
iPhone 17 Pro and Air N1 Feature

iPhone 17 vs. iPhone 16 Wi-Fi Speeds: New Study Reveals the Winner

Tuesday November 18, 2025 10:53 am PST by
A new study has revealed that the iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, and iPhone Air achieve significantly faster average Wi-Fi speeds compared to the iPhone 16 series, thanks to Apple's custom-designed N1 chip. The study was conducted by Ookla, the company behind the popular Speedtest website and app. It said the results are based on global, crowdsourced Speedtest user data...
macbook black friday

The Best Early Black Friday Mac Deals

Tuesday November 18, 2025 7:32 am PST by
We're getting closer to Black Friday, which lands next week on Friday, November 28. In the lead-up to the shopping holiday, we're tracking a few lowest-ever prices on Apple's most popular Macs, including the M4 MacBook Air and brand new M5 MacBook Pro. 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,...
Magic Keyboard Touch ID Feature

Apple Releases New Firmware for 140W USB-C Power Adapter, Magic Keyboard and Magic Trackpad

Tuesday November 18, 2025 1:05 pm PST by
Apple today released updated firmware for several accessories, including the 140W USB-C Power Adapter, the Magic Trackpad 2, the Magic Trackpad USB-C, the Magic Keyboard with Touch ID, and the Magic Keyboard with Touch ID and Numeric Keypad. There is no word on what's included in the updated firmware at this time, but it could offer performance improvements and security updates. Accessory...
watchos 26 workout app

Apple Watch Users Claim Workout App Is Now Worse in Every Way

Thursday November 20, 2025 7:01 am PST by
Apple Watch owners have been voicing their frustration online over changes to the Workout app that Apple introduced in watchOS 26, with many finding the redesigned interface makes starting exercises difficult and exasperating. When Apple launched watchOS 26 in September, the Workout app went from large, easily tapped workout tiles to a scrolling, corner-button interface. Instead of tapping a ...

Top Rated Comments

turbineseaplane Avatar
54 months ago

It seems obvious that Apple's software development process is broken, giving almost everything they release a feeling of being incomplete, unreliable, and unnecessarily rushed. Software will never be perfect, but this kind of problem is an unforced error on Apple's part.
What's so frustrating about this is that it's an "own goal".

Apple alone has insisted on this pointless constant march towards an "all new***" iOS version every year, when literally nobody wants that.

We all want features added over time when they are ready, sure. But more than that, people want things to get more polished, more optimized, faster, smoother, better, more well thought out.

Almost all of that is eliminated by forcing a full new version every year. The cycle of "fixing bugs" and "ironing out issues" never completes and then just restarts every Fall. It. Sucks.

iOS (and macOS) need to be "running releases" that get worked on and made better for a 3-4 year run before totally new versions.

They've made a treadmill for themselves and they can't keep up.
Score: 44 Votes (Like | Disagree)
Soba Avatar
54 months ago
It seems obvious that Apple's software development process is broken, giving almost everything they release a feeling of being incomplete, unreliable, and unnecessarily rushed. Software will never be perfect, but this kind of problem is an unforced error on Apple's part.

Apple increasingly looks like a company that is more concerned about image and that is trying to cover up shortcomings through marketing rather than using solid engineering techniques to get the product right.

Tim Cook heads the company and he deserves a lot of flak, but I suspect there are major problems at all levels. Perhaps it's time to clean house.
Score: 41 Votes (Like | Disagree)
GMShadow Avatar
54 months ago
Honestly, good for him.

Apple needs to get their stuff together. It's clear the wheels are coming off the cart under Cook the past few years.
Score: 34 Votes (Like | Disagree)
rickwalder Avatar
54 months ago
Apple’s stance has always been “without us, you are nothing” to devs

wonder if the day will come that apple realizes without devs, they are nothing. Who wants an iPhone without any apps?
Score: 28 Votes (Like | Disagree)
DesertDrummer Avatar
54 months ago
How frustrating. This would be such an easy, valuable PR win for Apple, and it would only increase their security and engagement with the security research community, but they're blowing it. Unfortunately, this is probably a side-effect of Apple's very secretive culture.
Score: 25 Votes (Like | Disagree)
BobSc Avatar
54 months ago

Oh really? Is that "clear"? Are the "wheels coming off the cart"?

Because from my perspective, I see the M1 transition blowing minds. I see Swift turning into a major powerhouse. I see Macs making a major comeback in the marketplace beyond any time in the past 20 years. I see Apple counting stacks.

So which "wheels" are these that you're referring to exactly?
The wheels that are coming off aren't the hardware items you mentioned. It's the attitude. I'm been an apple customer since about 1987. I've purchased tens of thousands of dollars of equipment. The wheels started coming off when apple switched to their insane policy of new OS's every year. That's more important to apple than making sure their hardware and software is as bug free as possible. Apple used to have a customer oriented mentality. That's gone. And in fact the wheels are't even on any more. The number of significant bugs in iOS 15 is proof enough. I used to think that apple could do no wrong. I now wonder if they can do much that is right!
Score: 24 Votes (Like | Disagree)