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Apple Rushes Out Fix for Zero-Day Attack on iPhones, Macs

The hack works by using a maliciously crafted image to cause memory corruption, Apple warns.

 & Michael Kan Principal Reporter

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It's time to update again. Apple is warning of a new hack that can target iPhones, iPads, and Macs by using a booby-trapped image.  

On Wednesday, Apple released an emergency patch in iOS 18.6.2 to protect users from the zero-day attack, which leverages a previously unknown flaw in the company’s software. 

“Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals,” the company wrote in the patch notes. 

Although details are thin, the description of the threat suggests an elite hacking group, possibly a spyware developer, has been delivering the attack through images secretly rigged to abuse the flaw. These images could be delivered in an email or text message.  

The flaw, dubbed CVE-2025-43300, involves Image IO, the company’s software framework for reading and writing image formats. “Processing a malicious image file may result in memory corruption,” the company said without elaborating. 

It was unclear what memory corruption could lead to. However, hackers often use memory corruption bugs to manipulate software into running rogue computer code, like downloading a malicious file. In April, the company patched a similar flaw that used maliciously crafted media files to trigger a memory corruption issue with Core Audio, Apple’s digital audio software framework for iOS and macOS. 

Apple has released its iOS fix for the iPhone XS and later. The patch has also been rolling out in iPadOS 18.6.2, iPadOS 17.7.10, macOS Sequoia 15.6.1, macOS Sonoma 14.7.8, and macOS Ventura 13.7.8.  

To install the security patch on your iPhone or iPad, go to Settings > General > Software Update. The device will also patch itself if you’ve toggled on automatic updates.

About Our Expert

Michael Kan

Michael Kan

Principal Reporter

My Experience

I've been a journalist for over 15 years. I got my start as a schools and cities reporter in Kansas City and joined PCMag in 2017, where I cover satellite internet services, cybersecurity, PC hardware, and more. I'm currently based in San Francisco, but previously spent over five years in China, covering the country's technology sector.

Since 2020, I've covered the launch and explosive growth of SpaceX's Starlink satellite internet service, writing 600+ stories on availability and feature launches, but also the regulatory battles over the expansion of satellite constellations, fights with rival providers like AST SpaceMobile and Amazon, and the effort to expand into satellite-based mobile service. I've combed through FCC filings for the latest news and driven to remote corners of California to test Starlink's cellular service.

I also cover cyber threats, from ransomware gangs to the emergence of AI-based malware. In 2024 and 2025, the FTC forced Avast to pay consumers $16.5 million for secretly harvesting and selling their personal information to third-party clients, as revealed in my joint investigation with Motherboard.

I also cover the PC graphics card market. Pandemic-era shortages led me to camp out in front of a Best Buy to get an RTX 3000. I'm now following how the AI-driven memory shortage is impacting the entire consumer electronics market. I'm always eager to learn more, so please jump in the comments with feedback and send me tips.

The Best Tech I've Had:

  • My first video game console: a Nintendo Famicom
  • I loved my Sega Saturn despite PlayStation's popularity.
  • The iPod Video I received as a gift in college
  • Xbox 360 FTW
  • The Galaxy Nexus was the first smartphone I was proud to own.
  • The PC desktop I built in 2013, which still works to this day.

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