CVE-2026-20635
Analyzed Analyzed - Analysis Complete
Memory Handling Flaw in Apple OSes Causes Process Crash

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 Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. Processing maliciously crafted web content may lead to an unexpected process crash.
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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
2026-06-14
NVD
CVE-2026-20635
EUVD
EUVD-2026-6726
Affected Vendors & Products
Showing 9 associated CPEs
Vendor Product Version / Range
apple macos to 26.3 (exc)
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 safari to 26.3 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
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Executive Summary

This vulnerability involves improper memory handling when processing maliciously crafted web content. It can cause an unexpected process crash on affected Apple operating systems and Safari.

Impact Analysis

The impact of this vulnerability is that processing specially crafted web content may cause an unexpected crash of the affected process, potentially disrupting normal device or application operation.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, update your Apple devices and software to the fixed versions where the issue is addressed.

  • 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 iOS and iPadOS to version 18.7.5 or 26.3 or later.
  • Update visionOS to version 26.3 or later.
  • Update Safari to version 26.3 or later.
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