Apple releases emergency iOS and macOS security patch - so update now

iPhone 5S
Apple iPhone 5S is one of the many devices compromised (Image credit: Future)

Apple has patched a zero-day arbitrary code execution (ACE) vulnerability in iOS and macOS devices that was being exploited in the wild to run code with kernel privileges on compromised devices.

The vulnerability (tracked as CVE-2021-30869) reportedly affected iPhones and Macs powered by older iOS and macOS versions.

"Apple is aware of reports that an exploit for this issue exists in the wild," Apple said in its update announcement

TechRadar needs you!

We're looking at how our readers use VPNs with streaming sites like Netflix so we can improve our content and offer better advice. This survey won't take more than 60 seconds of your time, and we'd hugely appreciate if you'd share your experiences with us.

>> Click here to start the survey in a new window <<

Although Apple hasn’t shared much details about the vulnerability citing customer’s protection, it did mention that the bug exists in Apple’s open source XNU operating system kernel. 

Long list of zero-days

The zero-day was reported to Apple by members of Google’s Threat Analysis Group, and Google Project Zero.

Reporting on the development, BleepingComputer shares that the vulnerability impacts iPhone 5s, iPhone 6, iPhone 6 Plus, iPad Air, iPad mini 2, iPad mini 3, and iPod touch (6th generation) running iOS 12.5.5, along with Macs running macOS Catalina

It’s also being reported that Apple has used the opportunity to backport security updates in the latest security update for two already-patched zero-days, one of them reported by The Citizen Lab and used to deploy NSO Pegasus spyware on hacked devices. 

Apple reportedly has had to deal with several zero-days off late, many of whom have been used in attacks against iOS and macOS devices, the most notorious being the ones exploited to install Pegasus spyware on iPhones.

Via BleepingComputer

Mayank Sharma

With almost two decades of writing and reporting on Linux, Mayank Sharma would like everyone to think he’s TechRadar Pro’s expert on the topic. Of course, he’s just as interested in other computing topics, particularly cybersecurity, cloud, containers, and coding.

Read more
Apple&#039;s new &quot;Share Item Location&quot; feature for AirTags.
Apple security alert - zero-day patched, so update your devices now
An option to add Ambient Music buttons to the iOS 18.4 Control Center.
Apple fixes dangerous zero-day used in attacks against iPhones and iPads
Apple Siri
Update your Apple device now: iOS 18.3.2 fixes a flaw that could be exploited by hackers
An iPhone with a 10:30am alarm ringing next to an Apple Watch that displays the time as 12:42pm
Apple warns "extremely sophisticated attack" hits iPhones and iPads, so update now
Security
Microsoft reveals more on a potentially major Apple macOS security flaw
An abstract image of a lock against a digital background, denoting cybersecurity.
Apple CPU security issue could let hackers steal user data from browsers
Latest in Security
Hacker silhouette working on a laptop with North Korean flag on the background
North Korea unveils new military unit targeting AI attacks
An image of network security icons for a network encircling a digital blue earth.
US government warns agencies to make sure their backups are safe from NAKIVO security issue
Laptop computer displaying logo of WordPress, a free and open-source content management system (CMS)
This top WordPress plugin could be hiding a worrying security flaw, so be on your guard
Computer Hacked, System Error, Virus, Cyber attack, Malware Concept. Danger Symbol
Veeam urges users to patch security issues which could allow backup hacks
UK Prime Minister Sir Kier Starmer
The UK releases timeline for migration to post-quantum cryptography
Representational image depecting cybersecurity protection
Cisco smart licensing system sees critical security flaws exploited
Latest in News
L-mount alliance
Sirui joins L-Mount Alliance to deliver its superb budget lenses for Leica, DJI, Sigma and Panasonic cameras
Security padlock and circuit board to protect data
Trust in digital services around the world sees a massive drop as security worries continue
Samuel and Romy standing very close together in A24&#039;s Babygirl movie
Everything new on Max in April 2025, including A24's Babygirl and The Last of Us season 2
An AMD Radeon RX 9070 XT made by Sapphire on a table with its retail packaging
AMD’s secret weapon against Nvidia seems to be stock – way more RX 9070 GPUs are rumored to be hitting shelves than RTX 5000 models
Hacker silhouette working on a laptop with North Korean flag on the background
North Korea unveils new military unit targeting AI attacks
Seth Milchick and Kier Eagan&#039;s animatronic speaking in Severance season 2 episode 10
Apple TV+ announces Severance has been renewed for season 3 after that devastating finale