About the security content of Safari 18.3.1
This document describes the security content of Safari 18.3.1.
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Safari 18.3.1
Released March 11, 2025
WebKit
Available for: macOS Ventura and macOS Sonoma
Impact: Maliciously crafted web content may be able to break out of Web Content sandbox. This is a supplementary fix for an attack that was blocked in iOS 17.2. (Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 17.2.)
Description: An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions.
WebKit Bugzilla: 285858
CVE-2025-24201: Apple
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