CVE-2026-20636
Undergoing Analysis Undergoing Analysis - In Progress
Memory Handling Flaw in Apple Safari and OS 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 26.3 and iPadOS 26.3, macOS Tahoe 26.3, visionOS 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
2026-06-15
NVD
CVE-2026-20636
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
apple ipados to 26.3 (exc)
apple iphone_os to 26.3 (exc)
apple macos to 26.3 (exc)
apple visionos 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 applications.

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 operation of the device or application.

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: iOS 26.3, iPadOS 26.3, Safari 26.3, macOS Tahoe 26.3, and visionOS 26.3.

Avoid processing or opening maliciously crafted web content until the update is applied, as it may lead to unexpected process crashes.

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