Apple users with certain older generations of iPhones, iPads and an iPod are being urged to install a new security update. 

In a Jan. 23 notice, Apple highlighted the impact of a recently discovered vulnerability picked up by Google's Threat Analysis Group.

The tech giant said that processing "maliciously crafted web content may lead to arbitrary code execution."

"Apple is aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.1," it said. 

IPHONE HACK LETS YOU SEND SECRET TEXTS TO FRIENDS

The back of an iPhone 6

The back of an iPhone 6 is seen on October 25, 2017.  ((Photo by Jaap Arriens/NurPhoto via Getty Images))

Now, the iOS 12.5.7 update is available for affected devices. 

Those devices include the iPhone 5s, iPhone 6, iPhone 6 Plus, iPad Air, iPad mini 2, iPad mini 3, and the sixth-generation iPod touch.

The iPad Mini 3

A member of the media displays an Apple Inc. iPad Mini 3 for a photograph after a product announcement in Cupertino, California, U.S., on Thursday, Oct. 16, 2014.  (Photographer: Noah Berger/Bloomberg via Getty Images)

GOT AN IPAD? APPLE JUST GAVE IT AN AMAZING NEW TRICK

Two updates were announced in December: iOS 15.7.2 and iPadOS 15.7.2. 

The Apple Store in New York City

The newly renovated Apple Store at Fifth Avenue is pictured on September 19, 2019, in New York City.  ((Photo by JOHANNES EISELE/AFP via Getty Images))

Apple previously said that those updates to address the issue were available for all iPhone 6 models, all iPhone 7 models, the first generation iPhone SE, all models of the iPad Pro, the iPad Air 2 and later, iPad 5th generation and later and the seventh generation iPod Touch. 

CLICK HERE TO GET THE FOX NEWS APP

To install the update on an iPhone, go to Settings, click General and then select Software Update.