(NEXSTAR) – On Friday, Apple released a new update for its iOS software system that fixes a potentially serious security breach. The new update impacts Webkit, a browser engine used in Safari.

According to Apple’s security website, Webkit is “processing maliciously crafted web content” that “may lead to universal cross-site scripting.” The issue “may have been actively exploited.”

Basically, the security threat “leaves your Apple device vulnerable to hacks regardless of whether you’re using Safari or other third-party browsers,” Mashable explains, hence why you should install the corrective update as soon as possible.

The update is available for the following devices:

• iPhone 6s and later
• iPad Pro (all models)
• iPad Air 2 and later
• iPad 5th generation and later
• iPad mini 4 and later,
• iPod touch (7th generation)

To install it, navigate to Settings > General > Software Update, and click “Download and Install.”