CVE-2025-43520
MEDIUMCVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
4Description
A memory corruption issue was addressed with improved memory handling. This issue is fixed in watchOS 26.1, iOS 18.7.2 and iPadOS 18.7.2, macOS Tahoe 26.1, visionOS 26.1, tvOS 26.1, macOS Sonoma 14.8.2, macOS Sequoia 15.7.2, iOS 26.1 and iPadOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.
Analysis
Apple kernel memory corruption in multiple operating systems allows a malicious application to cause unexpected system termination or write kernel memory via an out-of-bounds write flaw addressed in watchOS 26.1, iOS 18.7.2, and macOS Tahoe 26.1.
Technical Context
The flaw (CWE-787) stems from improper memory handling in the kernel, where a malicious app can trigger an out-of-bounds write to kernel memory pages. Apple addressed this with improved memory handling across all affected platforms.
Affected Products
['Apple watchOS before 26.1', 'Apple iOS/iPadOS before 18.7.2', 'Apple macOS Tahoe before 26.1', 'Apple visionOS before 26.1', 'Apple tvOS before 26.1', 'Apple macOS Sonoma before 14.8.2', 'Apple macOS Sequoia before 15.7.2']
Remediation
Update all Apple devices to the latest OS versions. Enterprise environments should enforce MDM policies requiring minimum OS versions and restrict sideloading of applications.
Priority Score
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External POC / Exploit Code
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