CVE-2025-24201: Apple Multiple Products WebKit Out-of-Bounds Write Vulnerability

Severity: critical (CVSS 10.0 v3.1)
Exploited in the wild: yes — in CISA KEV since 2025-03-13
EPSS: 3.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-03-11 · updated 2026-06-17
Weakness: CWE-787

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.).

Affected products

Apple iPadOS: from 15.8 before 15.8.4; from 16.7 before 16.7.11; from 17.0 before 17.7.6; from 18.0 before 18.3.2 — fixed in 15.8.4, 16.7.11, 17.7.6, 18.3.2
Apple Iphone Os: from 15.8 before 15.8.4; from 16.7 before 16.7.11; from 17.0 before 18.3.2 — fixed in 15.8.4, 16.7.11, 18.3.2
Apple macOS: from 15.0 before 15.3.2 — fixed in 15.3.2
Apple Safari: before 18.3.1 — fixed in 18.3.1
Apple visionOS: before 2.3.2 — fixed in 2.3.2
Apple watchOS: before 11.4 — fixed in 11.4
Debian Linux: 11.0

How to fix

Upgrade to a fixed version: Apple iPadOS 15.8.4, 16.7.11, 17.7.6, 18.3.2; Apple Iphone Os 15.8.4, 16.7.11, 18.3.2; Apple macOS 15.3.2; Apple Safari 18.3.1; Apple visionOS 2.3.2; Apple watchOS 11.4. Check the vendor advisory for mitigations.

References

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