Now-Fixed AirDrop Bug Let Anyone Lock-Up Nearby iPhones With Flood of Files

There was a serious AirDrop bug in iOS 13.2.3 that let attackers overwhelm nearby iPhones with files, causing them to lock up, reports TechCrunch. Apple addressed the bug in the iOS 13.3 update, and the details of how it works are now public.

AirDrop is designed to allow users to share files with one another, and depending on settings, it can be restricted to contacts, no one, or any nearby iPhone. Kishan Bagaria discovered the AirDrop bug in iOS 13.2.3, finding that he could lock up nearby iPhones that were able to accept files by flooding them with multiple files in a row.

airdropbug
When receiving an AirDrop file, an ‌iPhone‌ or iPad blocks the display until the incoming request is accepted or rejected. iOS did not limit the number of requests that a device can accept, so with repeated message requests, an attacker was able to send files over and over again to cause the iOS device to get stuck in a loop.

Devices with AirDrop set to "Everyone" were primarily vulnerable to the attack, which is not the default AirDrop setting. AirDrop is limited to Contacts, and the "Everyone" setting must be manually enabled.

As of now, though, the bug no longer works and Apple has limited the number of AirDrop messages that can be sent to an iOS device in quick succession. Given that this wasn't a traditional security vulnerability, Apple will not provide a common vulnerability and CVE score, but has instead acknowledged it in a separate section of the security support document.

Tag: AirDrop

Popular Stories

Apple Wallet ID Illinois

Apple Plans to Expand iPhone Driver's Licenses to These 7 U.S. States

Wednesday December 24, 2025 8:40 am PST by
In select U.S. states, residents can add their driver's license or state ID to the Apple Wallet app on the iPhone and Apple Watch, and then use it to display proof of identity or age at select airports and businesses, and in select apps. The feature is currently available in 13 U.S. states and Puerto Rico, and it is expected to launch in at least seven more in the future. To set up the...
iPhone Top Left Hole Punch Face ID Feature Purple

iPhone 18 Pro Launching Next Year With These 12 New Features

Tuesday December 23, 2025 8:36 am PST by
While the iPhone 18 Pro and iPhone 18 Pro Max are not expected to launch for another nine months, there are already plenty of rumors about the devices. Below, we have recapped 12 features rumored for the iPhone 18 Pro models. The same overall design is expected, with 6.3-inch and 6.9-inch display sizes, and a "plateau" housing three rear cameras Under-screen Face ID Front camera in...
maxresdefault

Where's the New Apple TV?

Monday December 22, 2025 11:30 am PST by
Apple hasn't updated the Apple TV 4K since 2022, and 2025 was supposed to be the year that we got a refresh. There were rumors suggesting Apple would release the new Apple TV before the end of 2025, but it looks like that's not going to happen now. Subscribe to the MacRumors YouTube channel for more videos. Bloomberg's Mark Gurman said several times across 2024 and 2025 that Apple would...
iOS 26

iOS 26.2 Adds These 8 New Features to Your iPhone

Monday December 22, 2025 8:47 am PST by
Earlier this month, Apple released iOS 26.2, following more than a month of beta testing. It is a big update, with many new features and changes for iPhones. iOS 26.2 adds a Liquid Glass slider for the Lock Screen's clock, offline lyrics in Apple Music, and more. Below, we have highlighted a total of eight new features. Liquid Glass Slider on Lock Screen A new slider in the Lock...
iOS 26

iOS 26.3 Brings AirPods-Like Pairing to Third-Party Devices in EU Under DMA

Monday December 22, 2025 3:20 pm PST by
The European Commission today praised the interoperability changes that Apple is introducing in iOS 26.3, once again crediting the Digital Markets Act (DMA) with bringing "new opportunities" to European users and developers. The Digital Markets Act requires Apple to provide third-party accessories with the same capabilities and access to device features that Apple's own products get. In iOS...
maxresdefault

10 Mac Apps Worth Trying in 2026

Wednesday December 24, 2025 9:27 am PST by
2026 is almost upon us, and a new year is a good time to try out some new apps. We've rounded up 10 excellent Mac apps that are worth checking out. Subscribe to the MacRumors YouTube channel for more videos. Alt-Tab (Free) - Alt-Tab brings a Windows-style alt + tab thumbnail preview option to the Mac. You can see a full window preview of open apps and app windows. One Thing (Free) -...
iPhone Fold Vertical Feature

Why Apple's Foldable iPhone May Be Smaller Than Expected

Tuesday December 23, 2025 5:21 am PST by
Apple's first foldable iPhone, rumored for release next year, may turn out to be smaller than most people imagine, if a recent report is anything to go by. According to The Information, the outer display on the book-style device will measure just 5.3 inches – that's smaller than the 5.4-inch screen on the ‌iPhone‌ mini, a line Apple discontinued in 2022 due to poor sales. The report has led ...
Foldable iPhone 2023 Feature Iridescent Search

Samsung Developing 'Wide Fold' With iPhone Fold-Like Design Ahead of Apple's 2026 Launch

Tuesday December 23, 2025 11:55 am PST by
Samsung is working on a new foldable smartphone that's wider and shorter than the models that it's released before, according to Korean news site ETNews. The "Wide Fold" will compete with Apple's iPhone Fold that's set to launch in September 2026. Samsung's existing Galaxy Z Fold7 display is 6.5 inches when closed, and 8 inches when open, with a 21:9 aspect ratio when folded and a 20:18...

Top Rated Comments

SVTmaniac Avatar
79 months ago
I don't know if I'd call it serious. More of an inconvenience if anything. First off you'd have to be dumb enough to leave your airdrop set to everyone and then someone would have to know about the bug to send files that basically annoy you more than anything. Not like they get data off your phone or cause it to brick.
Score: 5 Votes (Like | Disagree)
Nabby Avatar
79 months ago

Shoot now I can’t mess with people in public like I use to do
This is how my teenage son passes the time while waiting in pubic...He will look for "open" AirDrop iPhones and send a picture of a fish. He doesn't flood the phone, just sends it once, and then looks to see who might have noticed. He now has learned to change is phone name when someone saw the picture was from "Joe's iPhone" and called out "Joe" looking for who might respond.:)

It's amazing the number of people you find who have AirDrop wide open at a place like Disney. :rolleyes:
Score: 5 Votes (Like | Disagree)
Jimmy Bubbles Avatar
79 months ago
Looks like the old concept of IM-bombs hasn't died, only reincarnated. haha!
Score: 1 Votes (Like | Disagree)
MacBH928 Avatar
79 months ago
ahh...the old Windows 98 pop-up trick, strikes again.

Airdrop is great technology, I wish more people used it. I hardly hear anyone does especially that it is Apple only.
Score: 1 Votes (Like | Disagree)
roguedaemon Avatar
79 months ago
Here’s a suggestion; make the AirDrop dialogue more versatile.
It’s just that one popover layer that forces you to interact with it.
That’s ok I guess, But if you get sent multiple files, which one gets priority?

I propose a new dialog which appears at the top of the screen like a normal notification. Once interacted with, it would show you all incoming connections, what they are and whether you want to accept or reject each transfer. More complicated but I think if done in the Apple way would be simple and useable.

What do you lads and ladies think?
Score: 1 Votes (Like | Disagree)
DeepIn2U Avatar
79 months ago

Shoot now I can’t mess with people in public like I use to do
LOL ... reminds me of 'bluetooth wardriving' way back in 2002. Go Transit .... key up a message on my Ericsson "Evening ... if you receive this message bring it to the driver for a month of free travel anywhere in the GTA" LMAO ... some cat in 1mins jump up and spoke to the driver for a lengthy 20mins LMAO! Nowadays kids would fled you with eggplant emoji (yet not the vegetable nor the emoji) :( fine lines between tom foolery vs harassment.
Score: 1 Votes (Like | Disagree)