CVE-2026-20634
Analyzed Analyzed - Analysis Complete
Memory Disclosure via Malicious Image Processing in Apple OS Components

Publication date: 2026-02-11

Last updated on: 2026-04-02

Assigner: Apple Inc.

Description
The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. Processing a maliciously crafted image may result in disclosure of process memory.
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Meta Information
Published
2026-02-11
Last Modified
2026-04-02
Generated
2026-06-16
AI Q&A
2026-02-12
EPSS Evaluated
2026-06-15
NVD
CVE-2026-20634
Affected Vendors & Products
Showing 10 associated CPEs
Vendor Product Version / Range
apple tvos to 26.3 (exc)
apple visionos to 26.3 (exc)
apple watchos to 26.3 (exc)
apple ipados to 18.7.5 (exc)
apple ipados From 26.0 (inc) to 26.3 (exc)
apple iphone_os to 18.7.5 (exc)
apple iphone_os From 26.0 (inc) to 26.3 (exc)
apple macos From 15.0 (inc) to 15.7.4 (exc)
apple macos From 26.0 (inc) to 26.3 (exc)
apple macos From 14.0 (inc) to 14.8.4 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability involves improper memory handling when processing images. Specifically, processing a maliciously crafted image may lead to the disclosure of process memory.

The issue has been addressed by improving memory handling in various Apple operating systems including watchOS, tvOS, macOS (Tahoe, Sonoma, Sequoia), iOS, iPadOS, and visionOS.

Impact Analysis

An attacker could exploit this vulnerability by providing a specially crafted image that, when processed, could cause sensitive process memory to be disclosed.

This could potentially lead to exposure of sensitive information stored in memory, which might be used for further attacks or unauthorized data access.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, update your Apple devices to the fixed versions of the operating systems as soon as possible.

  • Update watchOS to version 26.3 or later.
  • Update tvOS to version 26.3 or later.
  • Update macOS Tahoe to version 26.3 or later.
  • Update macOS Sonoma to version 14.8.4 or later.
  • Update macOS Sequoia to version 15.7.4 or later.
  • Update iOS and iPadOS to version 18.7.5 or later.
  • Update visionOS to version 26.3 or later.
  • Update iOS and iPadOS to version 26.3 or later.
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