CVE-2026-20687
Received Received - Intake
Use-After-Free in Apple OS Kernels Causes System Crash, Memory Corruption

Publication date: 2026-03-25

Last updated on: 2026-03-25

Assigner: Apple Inc.

Description
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Tahoe 26.4, tvOS 26.4, watchOS 26.4. An app may be able to cause unexpected system termination or write kernel memory.
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Meta Information
Published
2026-03-25
Last Modified
2026-03-25
Generated
2026-06-16
AI Q&A
2026-03-25
EPSS Evaluated
2026-06-14
NVD
CVE-2026-20687
EUVD
EUVD-2026-15058
Affected Vendors & Products
Showing 8 associated CPEs
Vendor Product Version / Range
apple macos From 15.0 (inc) to 15.7.5 (exc)
apple macos From 26.0 (inc) to 26.4 (exc)
apple ipados to 18.7.7 (exc)
apple ipados From 26.0 (inc) to 26.4 (exc)
apple iphone_os to 18.7.7 (exc)
apple iphone_os From 26.0 (inc) to 26.4 (exc)
apple tvos to 26.4 (exc)
apple watchos to 26.4 (exc)
Helpful Resources
Exploitability
CWE
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KEV
KEV Icon
CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
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Executive Summary

[{'type': 'paragraph', 'content': "CVE-2026-20687 is a vulnerability in the libxpc component affecting watchOS 26.4 and tvOS 26.4. It allows an app to enumerate a user's installed apps, which can potentially compromise user privacy. The issue was addressed by Apple through improved checks within libxpc to prevent unauthorized app enumeration."}] [1, 2]

Impact Analysis

[{'type': 'paragraph', 'content': "This vulnerability allows an app to enumerate the user's installed apps, potentially compromising user privacy. This means that a malicious app could gather information about other apps installed on the device without authorization."}] [1, 2]

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, you should update your Apple devices to the fixed versions provided by Apple.

  • Update iOS and iPadOS devices to iOS 18.7.7, iPadOS 18.7.7, iOS 26.4, or iPadOS 26.4.
  • Update macOS devices to macOS Sequoia 15.7.5 or macOS Tahoe 26.4.
  • Update Apple TV devices to tvOS 26.4.
  • Update Apple Watch devices to watchOS 26.4.

These updates include improved checks within the libxpc component to prevent unauthorized app enumeration and address the use after free issue.

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