Security Experts:

Connect with us

Hi, what are you looking for?


Application Security

Apple Patches ‘Actively Exploited’ Mac, iOS Security Flaw

Apple on Monday released a major security update with fixes for a security defect the company says “may have been actively exploited” to plant malware on macOS and iOS devices.

Apple on Monday released a major security update with fixes for a security defect the company says “may have been actively exploited” to plant malware on macOS and iOS devices.

As is customary, Apple did not share details on the in-the-wild attacks or the profile of the targets.  The company did not release any IOCs (indicators of compromise) or any additional data to help defenders hunt for signs of infections.

Instead, a line in Apple advisory simply reads: “Apple is aware of a report that this issue may have been actively exploited.”

[ Related: Google Confirms Sixth Zero-Day Chrome Attack in 2021 ]

This is the 13th zero-day vulnerability patched by Cupertino in the first half of this year.  

The newly patched vulnerability — CVE-2021-30807 — was reported anonymously to Apple and is described as a memory corruption flaw that could be exploited to launch code execution attacks with kernel privileges. 

The flaws were fixed in the macOS Big Sur 11.5.1 update and a separate patch bundle that brings iOS and iPad devices up to version 14.7.1.

The newest patch comes less than a week after Apple shipped iOS 14.7 with fixes for a wide range of security issues.

Related: Apple Ships Emergency Fixes for Under-Attack iOS Zero-Day

Related: Apple iOS 14.5 Patches 50 Security Vulnerabilities

Related: Apple Adds ‘BlastDoor’ to Secure iPhones From Zero-Click Attacks

Written By

Ryan Naraine is Editor-at-Large at SecurityWeek and host of the popular Security Conversations podcast series. He is a security community engagement expert who has built programs at major global brands, including Intel Corp., Bishop Fox and GReAT. Ryan is a founding-director of the Security Tinkerers non-profit, an advisor to early-stage entrepreneurs, and a regular speaker at security conferences around the world.

Click to comment

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

Join this webinar to learn best practices that organizations can use to improve both their resilience to new threats and their response times to incidents.


Join this live webinar as we explore the potential security threats that can arise when third parties are granted access to a sensitive data or systems.


Expert Insights

Related Content

Application Security

Cycode, a startup that provides solutions for protecting software source code, emerged from stealth mode on Tuesday with $4.6 million in seed funding.


Less than a week after announcing that it would suspended service indefinitely due to a conflict with an (at the time) unnamed security researcher...

Data Protection

The CRYSTALS-Kyber public-key encryption and key encapsulation mechanism recommended by NIST for post-quantum cryptography has been broken using AI combined with side channel attacks.

Data Protection

The cryptopocalypse is the point at which quantum computing becomes powerful enough to use Shor’s algorithm to crack PKI encryption.


The changing nature of what we still generally call ransomware will continue through 2023, driven by three primary conditions.


WASHINGTON - Cyberattacks are the most serious threat facing the United States, even more so than terrorism, according to American defense experts. Almost half...

Application Security

PayPal is alerting roughly 35,000 individuals that their accounts have been targeted in a credential stuffing campaign.


No one combatting cybercrime knows everything, but everyone in the battle has some intelligence to contribute to the larger knowledge base.