CVE-2026-20620
Undergoing Analysis Undergoing Analysis - In Progress
Out-of-Bounds Read in macOS Kernel Causes System Crash

Publication date: 2026-02-11

Last updated on: 2026-04-02

Assigner: Apple Inc.

Description
An out-of-bounds read issue was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3. An attacker may be able to cause unexpected system termination or read kernel 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-2026-20620
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
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)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.
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Executive Summary

This vulnerability is an out-of-bounds read issue that was addressed by improving input validation in certain macOS versions. It allows an attacker to potentially read kernel memory or cause the system to terminate unexpectedly.

Impact Analysis

The impact of this vulnerability includes the possibility for an attacker to cause unexpected system termination, which could lead to denial of service, or to read sensitive kernel memory, potentially exposing confidential information.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, update your macOS system to one of the fixed versions: macOS Sequoia 15.7.4, macOS Tahoe 26.3, or macOS Sonoma 14.8.4.

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