CVE-2025-24201
Description
An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in Safari 18.3.1, iOS 15.8.4 and iPadOS 15.8.4, iOS 16.7.11 and iPadOS 16.7.11, iOS 18.3.2 and iPadOS 18.3.2, iPadOS 17.7.6, macOS Sequoia 15.3.2, visionOS 2.3.2, watchOS 11.4. 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.).
Summary dbcve.org
An out-of-bounds write vulnerability in WebKit allows malicious web content to escape the Web Content sandbox, potentially enabling arbitrary code execution. Apple reports this is a supplementary fix for an attack previously blocked in iOS 17.2, with confirmed in-the-wild exploitation against targeted individuals on older iOS versions.
Mitigation
Apply the vendor-supplied updates immediately: Safari 18.3.1, iOS/iPadOS 15.8.4+, 16.7.11+, 17.7.6+, 18.3.2+, macOS Sequoia 15.3.2+, visionOS 2.3.2+, and watchOS 11.4+. Prioritize iOS devices given confirmed active exploitation.