CVE-2026-64699
Analyzed Analyzed - Analysis Complete

Memory Disclosure in macOS Sequoia

Publication date: 2026-07-27

Last updated on: 2026-07-28

Assigner: Apple Inc.

Description
A memory initialization 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 disclose kernel memory.

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Meta Information

Published
2026-07-27
Last Modified
2026-07-28
Generated
2026-08-17
AI Q&A
2026-07-28
EPSS Evaluated
2026-08-15
NVD
CVE-2026-64699
EUVD
EUVD-2026-49516

Affected Vendors & Products

Showing 3 associated CPEs
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
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KEV
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CWE ID Description
CWE-457 The code uses a variable that has not been initialized, leading to unpredictable or unintended results.

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Executive Summary

This vulnerability is a memory initialization issue that could allow an app to disclose kernel memory. It was addressed by improving memory handling in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6.

Detection Guidance

This vulnerability is specific to Apple macOS systems and involves kernel memory disclosure. Detection typically requires checking system logs for unusual memory access patterns or kernel panics. Use commands like 'log show --predicate "eventMessage contains 'kernel memory'"' or 'syslog | grep -i kernel' to inspect logs. Ensure your macOS is updated to the latest version to mitigate the issue.

Impact Analysis

An attacker could exploit this flaw to access sensitive kernel memory, potentially leading to unauthorized data exposure or system compromise.

Compliance Impact

This vulnerability allows an app to disclose kernel memory, which could potentially expose sensitive user data. This may impact compliance with GDPR (data protection) and HIPAA (health data privacy) by increasing the risk of unauthorized data exposure.

Mitigation Strategies

Update to the latest patched versions of macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, or macOS Tahoe 26.6 to address the memory initialization issue.

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