Apple has issued a new round of Rapid Security Response (RSR) updates to address a new zero-day bug exploited in attacks and impacting fully-patched iPhones, Macs, and iPads.

“Apple is aware of a report that this issue may have been actively exploited,” the company says in iOS and macOS advisories when describing the CVE-2023-37450 vulnerability reported by an anonymous security researcher.

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The RSR patches are available for macOS Ventura 13.4.1 (a), iOS 16.5.1 (a), iPadOS 16.5.1 (a), and Safari 16.5.2. To install the patches, users should open the Settings app and tap on “General.” Then, tap on “Software Update” and check for updates.

The company has addressed this security weakness with improved checks to mitigate exploitation attempts. Users are advised to install the RSR patches as soon as possible to protect their devices from attack.

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