CVE-2026-64698: An app may be able to cause unexpected system termination or read kernel memory in Apple macOS
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.
AI Analysis
Technical Summary
CVE-2026-64698 is a critical memory handling vulnerability in Apple macOS that may allow an application to cause unexpected system termination or read kernel memory. This vulnerability affects macOS systems before the patched versions Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. The issue was resolved by Apple through improved memory management in these releases. The CVSS v3.1 base score is 9.8, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation can lead to a complete system crash (denial of service) or unauthorized disclosure of kernel memory, potentially exposing sensitive information or enabling further attacks. The vulnerability affects system stability and security at the kernel level, posing a critical risk to affected macOS users.
Mitigation Recommendations
Apple has fixed this vulnerability in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. Users and administrators should update to these or later versions to mitigate the risk. Patch status is confirmed by the vendor advisory. No additional mitigation steps are indicated.
CVE-2026-64698: An app may be able to cause unexpected system termination or read kernel memory in Apple macOS
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 v3.1
Score 9.8critical
Affected software
Apple
macOS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-64698 is a critical memory handling vulnerability in Apple macOS that may allow an application to cause unexpected system termination or read kernel memory. This vulnerability affects macOS systems before the patched versions Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. The issue was resolved by Apple through improved memory management in these releases. The CVSS v3.1 base score is 9.8, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation can lead to a complete system crash (denial of service) or unauthorized disclosure of kernel memory, potentially exposing sensitive information or enabling further attacks. The vulnerability affects system stability and security at the kernel level, posing a critical risk to affected macOS users.
Mitigation Recommendations
Apple has fixed this vulnerability in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. Users and administrators should update to these or later versions to mitigate the risk. Patch status is confirmed by the vendor advisory. No additional mitigation steps are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-07-20T18:09:01.158Z
- State
- PUBLISHED
Threat ID: 6a67c1bf9c2644c7f8cb12ba
Added to database: 07/27/2026, 20:38:23 UTC
Last enriched: 07/29/2026, 23:34:59 UTC
Last updated: 09/11/2026, 22:06:34 UTC
Views: 48
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