CVE-2026-64698

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Memory Corruption in macOS Leading to Kernel Read

Publication date: 2026-07-27

Last updated on: 2026-07-30

Assigner: Apple Inc.

Description

The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination or read kernel memory.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-07-27

Last Modified

2026-07-30

Generated

2026-08-17

AI Q&A

2026-07-28

EPSS Evaluated

2026-08-15

NVD

CVE-2026-64698

EUVD

EUVD-2026-49507

Affected Vendors & Products

Vendor	Product	Version / Range
apple	macos	From 14.0 (inc) to 14.8.8 (exc)
apple	macos	From 15.0 (inc) to 15.7.8 (exc)
apple	macos	From 26.0 (inc) to 26.6 (exc)

Helpful Resources

Exploitability

CWE

KEV

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

Executive Summary

This vulnerability involves a memory handling issue in Apple operating systems. An application could potentially cause the system to terminate unexpectedly or access kernel memory, which is typically restricted for security reasons.

Detection Guidance

Detection requires checking macOS version against patched releases. For Sequoia, Sonoma, and Tahoe, verify if the system is running versions 15.7.8, 14.8.8, or 26.6 or later respectively. Use 'sw_vers' command to check macOS version.

Impact Analysis

An attacker could exploit this to crash your device or access sensitive kernel memory, potentially leading to unauthorized data access or system instability. It primarily affects users running vulnerable versions of macOS Sequoia, Sonoma, or Tahoe.

Compliance Impact

The provided CVE does not specify direct impacts on compliance with standards like GDPR or HIPAA. The vulnerability involves potential system termination or kernel memory read, which could indirectly affect data confidentiality or availability if exploited.

Mitigation Strategies

Update macOS to the latest patched versions: Sequoia 15.7.8, Sonoma 14.8.8, or Tahoe 26.6. Enable automatic updates to prevent future vulnerabilities. Remove untrusted apps that may exploit this issue.

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