Apple has disclosed serious security vulnerabilities for iPhones, iPads and Macs, which could potentially allow attackers to take complete control of devices.
Apple added that it is "aware of a report that this issue may have been actively exploited".
Security experts have advised users to urgently update affected devices - the iPhone 6S and later models, newer iPads, and Mac computers running macOS Monterey.
It also impacts some iPod models.
In a security update on its support page, Apple said one of the flaws means a malicious application "may be able to execute arbitrary code with kernel privileges" - which TechCrunch describes as meaning full access to the device.
TechCrunch reported that the other - a WebKit bug - could be exploited if a vulnerable device accessed or processed "maliciously crafted web content [that] may lead to arbitrary code execution".
The warning to users comes ahead of its traditional September launch of the latest iPhone - expected this year to be named the iPhone 14.
UAE outlines vision for low-emission hydrogen economy at World Hydrogen Summit
India, US discuss trade as Rubio cites progress on Iran conflict
ENOC signs deal with Allied Biofuels to explore sustainable aviation fuel supply
Mexico, EU sign stalled trade deal as they aim to diversify from US
Dubai announces 5% VAT on Salik, Parkin fees
