CVE-2026-20698
Kernel Memory Corruption via Memory Handling Flaw in Apple OS
Publication date: 2026-03-25
Last updated on: 2026-03-26
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 26.4 (exc) |
| apple | iphone_os | to 26.4 (exc) |
| apple | macos | From 26.0 (inc) to 26.4 (exc) |
| apple | tvos | to 26.4 (exc) |
| apple | visionos | to 26.4 (exc) |
| apple | watchos | to 26.4 (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. |
| CWE-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability involves improper memory handling in certain Apple operating systems. Specifically, an application may exploit this issue to cause unexpected system termination or corrupt kernel memory. The problem has been addressed and fixed in versions 26.4 of iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS.
How can this vulnerability impact me? :
If exploited, this vulnerability could allow an application to cause your device's system to terminate unexpectedly or corrupt the kernel memory. This could lead to system instability, crashes, or potentially more severe issues related to the core operating system functions.
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 to the fixed versions of the operating systems: iOS 26.4, iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, or watchOS 26.4.