Out-of-Bounds Read Vulnerability in macOS by Apple
CVE-2026-20620

7.7HIGH

Key Information:

Vendor

Apple
Status
Mac OS
Vendor
CVE Published:
11 February 2026

What is CVE-2026-20620?

An out-of-bounds read vulnerability has been identified in macOS that could allow an attacker to potentially access sensitive kernel memory or lead to unexpected system crashes. The issue has been addressed with enhanced input validation in multiple macOS versions, including Sequoia 15.7.4, Tahoe 26.3, and Sonoma 14.8.4, ensuring better protection against unauthorized data access and improving overall system stability.

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Deploy the Patch

Affected Version(s)

macOS < 26.3

macOS < 15.7

macOS < 14.8

References

https://support.apple.com/en-us/126348
https://support.apple.com/en-us/126349
https://support.apple.com/en-us/126350

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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