About the security content of Safari 15.3

This document describes the security content of Safari 15.3.

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Safari 15.3*

Released February 10, 2022

WebKit

Available for: macOS Big Sur and macOS Catalina

Impact: Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

Description: A use after free issue was addressed with improved memory management.

CVE-2022-22620: an anonymous researcher

• After installing this update, the build number for Safari 15.3 is 16612.4.9.1.8 on macOS Big Sur and 15612.4.9.1.8 on macOS Catalina.

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Published Date: November 06, 2023