CVE-2026-20636
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
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| 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 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
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.