CVE-2025-43520
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-12-12

Last updated on: 2026-04-03

Assigner: Apple Inc.

Description
A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.
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Meta Information
Published
2025-12-12
Last Modified
2026-04-03
Generated
2026-06-16
AI Q&A
2025-12-12
EPSS Evaluated
2026-06-15
NVD
CVE-2025-43520
Affected Vendors & Products
Showing 10 associated CPEs
Vendor Product Version / Range
apple macos 26.0
apple ipados 26.0
apple iphone_os 26.0
apple macos From 14.0 (inc) to 14.8.2 (exc)
apple macos From 15.0 (inc) to 15.7.2 (exc)
apple visionos to 26.1 (exc)
apple watchos to 26.1 (exc)
apple tvos to 26.1 (exc)
apple ipados to 18.7.2 (exc)
apple iphone_os to 18.7.2 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.
CWE-120 The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
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Executive Summary

This vulnerability is a memory corruption issue that occurs due to improper memory handling. It could allow a malicious application to cause unexpected system termination or to write to kernel memory, potentially compromising system stability or security.

Impact Analysis

The vulnerability can impact you by allowing a malicious application to cause your system to unexpectedly terminate or to write to kernel memory, which could lead to system crashes, instability, or potentially allow unauthorized actions at the kernel level.

Mitigation Strategies

Apply the security updates provided by Apple for your device's operating system. Specifically, update to watchOS 26.1, iOS 18.7.2 or 26.1, iPadOS 18.7.2 or 26.1, macOS Tahoe 26.1, macOS Sonoma 14.8.2, macOS Sequoia 15.7.2, visionOS 26.1, or tvOS 26.1 as applicable to your device to address the memory corruption issue.

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