(CNN Business) — Apple urged users of most of its devices to update their software after the company discovered a vulnerability in its operating systems that it says “could have been actively exploited.”

In security updates posted online on Wednesday and Thursday, Apple said the vulnerability affects iPhones dating back to the 6S model, iPad fifth generation and later, iPad Air 2 and later, iPad mini 4 and later, all iPad Pro and iPod touch 7th generation models.

Apple (AAPL) said the vulnerabilities give hackers the ability to take control of a device’s operating system to “execute arbitrary code” and potentially infiltrate devices through “malicious web content.”

The vulnerability also extends to Mac computers running the company’s Monterey operating system, as well as Apple’s Safari browser on its Big Sur and Catalina operating systems, the company said in a subsequent update.

Cybersecurity experts urged Apple users to update their devices, with the US government’s Cybersecurity and Infrastructure Security Agency warning that “an attacker could exploit one of these vulnerabilities to take control of an affected device.” “.

The agency said affected users should “apply any necessary updates as soon as possible.”

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