CVE-2026-64704: An app may be able to cause unexpected system termination in Apple macOS
A type confusion 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.
AI Analysis
Technical Summary
This vulnerability involves a type confusion flaw in Apple macOS that could be exploited by an application to cause unexpected system termination. Apple fixed the issue by improving memory handling in specific macOS versions: Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. 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. No known exploits in the wild have been reported at this time. The remediation level is not explicitly stated, but fixed versions are provided.
Potential Impact
Successful exploitation can lead to unexpected system termination, impacting system availability and potentially compromising confidentiality and integrity due to the type confusion flaw. The CVSS score of 9.8 indicates critical severity with full impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Apply the official fixes by upgrading to macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, or macOS Tahoe 26.6, where the vulnerability has been addressed through improved memory handling. Patch status is confirmed by the vendor's fixed versions. No additional mitigation guidance is provided or required beyond applying these updates.
CVE-2026-64704: An app may be able to cause unexpected system termination in Apple macOS
Description
A type confusion 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.
CVSS v3.1
Score 9.8critical
Affected software
Apple
macOS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a type confusion flaw in Apple macOS that could be exploited by an application to cause unexpected system termination. Apple fixed the issue by improving memory handling in specific macOS versions: Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. 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. No known exploits in the wild have been reported at this time. The remediation level is not explicitly stated, but fixed versions are provided.
Potential Impact
Successful exploitation can lead to unexpected system termination, impacting system availability and potentially compromising confidentiality and integrity due to the type confusion flaw. The CVSS score of 9.8 indicates critical severity with full impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Apply the official fixes by upgrading to macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, or macOS Tahoe 26.6, where the vulnerability has been addressed through improved memory handling. Patch status is confirmed by the vendor's fixed versions. No additional mitigation guidance is provided or required beyond applying these updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-07-20T18:09:24.049Z
- State
- PUBLISHED
Threat ID: 6a67c1bf9c2644c7f8cb12d7
Added to database: 07/27/2026, 20:38:23 UTC
Last enriched: 07/29/2026, 23:48:07 UTC
Last updated: 09/10/2026, 20:02:22 UTC
Views: 57
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