Home Cyber Security News Apple Fixed Serious Actively Exploited Zero-Day Bug With iOS 14.4.2

Apple Fixed Serious Actively Exploited Zero-Day Bug With iOS 14.4.2

by Abeerah Hashim
Apple patched iOS zero-day bug

Heads up iOS users! Make sure to update your devices with the latest iOS version at the earliest. That’s because Apple has recently fixed a serious iOS zero-day bug that the attackers are actively exploiting.

Apple Zero-Day Under Attack Targeting iOS Users

Security researchers Clement Lecigne and Billy Leonard of Google Threat Analysis Group have caught a serious vulnerability in iOS devices.

Tracked as CVE-2021-1879, the vulnerability primarily resides in Apple’s WebKit browser engine.

What makes this bug more serious is that it attracted the attention of criminal hackers before the researchers or Apple. Thus, it went under attack even before Apple could know or address it.

Upon detecting the bug, the researchers reached out to Apple to report the matter. Consequently, the Cupertino giant investigated the vulnerability and admitted its exploitation in the wild besides patching it. As stated in their advisory,

Apple is aware of a report that this issue may have been actively exploited.

Whereas, describing the impact of the bug and the subsequent, the advisory reads,

Processing maliciously crafted web content may lead to universal cross site scripting… This issue was addressed by improved management of object lifetimes.

Patches Released For iPhones, iPads, and WatchOS

Apart from the recent iOS, the same zero-day bug also affects older devices such as the iPhone 5s. Also, this bug affects Apple Watch too.

Hence, Apple has fixed the vulnerability with the release of iOS 14.4.2 and iPadOS 14.4.2. The new updates are available for iPhone 6s and later, iPad Pro (all models), iPad 5th generation and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th gen).

Whereas, the tech giant has released the patch for older devices with iOS 12.5.2. This update applies to iPhone 6, iPhone 6 Plus, iPhone 5s, iPad Air, iPad mini 2, iPad mini 3, and iPod touch (6th gen).

As for the Apple Watch users, they should update their wearables with watchOS 7.3.3. This update applies to Apple Watch Series 3 and later.

You may also like

Latest Hacking News

Privacy Preference Center


The __cfduid cookie is used to identify individual clients behind a shared IP address and apply security settings on a per-client basis.

cookie_notice_accepted and gdpr[allowed_cookies] are used to identify the choices made from the user regarding cookie consent.

For example, if a visitor is in a coffee shop where there may be several infected machines, but the specific visitor's machine is trusted (for example, because they completed a challenge within your Challenge Passage period), the cookie allows Cloudflare to identify that client and not challenge them again. It does not correspond to any user ID in your web application, and does not store any personally identifiable information.

__cfduid, cookie_notice_accepted, gdpr[allowed_cookies]


DoubleClick by Google refers to the DoubleClick Digital Marketing platform which is a separate division within Google. This is Google’s most advanced advertising tools set, which includes five interconnected platform components.

DoubleClick Campaign Manager: the ad-serving platform, called an Ad Server, that delivers ads to your customers and measures all online advertising, even across screens and channels.

DoubleClick Bid Manager – the programmatic bidding platform for bidding on high-quality ad inventory from more than 47 ad marketplaces including Google Display Network.

DoubleClick Ad Exchange: the world’s largest ad marketplace for purchasing display, video, mobile, Search and even Facebook inventory.

DoubleClick Search: is more powerful than AdWords and used for purchasing search ads across Google, Yahoo, and Bing.

DoubleClick Creative Solutions: for designing, delivering and measuring rich media (video) ads, interactive and expandable ads.



The _ga is asssociated with Google Universal Analytics - which is a significant update to Google's more commonly used analytics service. This cookie is used to distinguish unique users by assigning a randomly generated number as a client identifier. It is included in each page request in a site and used to calculate visitor, session and campaign data for the sites analytics reports. By default it is set to expire after 2 years, although this is customisable by website owners.

The _gat global object is used to create and retrieve tracker objects, from which all other methods are invoked. Therefore the methods in this list should be run only off a tracker object created using the _gat global variable. All other methods should be called using the _gaq global object for asynchronous tracking.

_gid works as a user navigates between web pages, they can use the gtag.js tagging library to record information about the page the user has seen (for example, the page's URL) in Google Analytics. The gtag.js tagging library uses HTTP Cookies to "remember" the user's previous interactions with the web pages.

_ga, _gat, _gid