Update all Apple products now! 911

 (CNN Business )Apple is directing users of most of its devices to update their software after the company discovered a vulnerability in its operating systems that it says "may 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 5th generation and later, iPad Air 2 and later, iPad mini 4 and later, all iPad Pro models and the 7th generation iPod touch.

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 "maliciously crafted web content."