CVE-2026-64703: An app may be able to cause a denial-of-service in Apple macOS
A use after free issue was addressed with improved memory management. 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 a denial-of-service.
AI Analysis
Technical Summary
This vulnerability involves a use-after-free condition in Apple macOS that could be exploited by an application to cause a denial-of-service (DoS). The issue was resolved by Apple through improved memory management in specific macOS versions: Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. The CVSS 3.1 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 are reported in the wild at this time.
Potential Impact
An unprivileged application could exploit this use-after-free vulnerability to cause a denial-of-service on affected macOS systems, potentially disrupting system availability. The vulnerability also has high impact on confidentiality and integrity according to the CVSS vector, though specific details are not provided. No known active exploitation has been reported.
Mitigation Recommendations
A fix is available in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. Users and administrators should update to these versions or later to remediate this vulnerability. No additional mitigation guidance is provided or required beyond applying the official patches.
CVE-2026-64703: An app may be able to cause a denial-of-service in Apple macOS
Description
A use after free issue was addressed with improved memory management. 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 a denial-of-service.
CVSS v3.1
Score 9.8critical
Affected software
Apple
macOS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition in Apple macOS that could be exploited by an application to cause a denial-of-service (DoS). The issue was resolved by Apple through improved memory management in specific macOS versions: Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6. The CVSS 3.1 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 are reported in the wild at this time.
Potential Impact
An unprivileged application could exploit this use-after-free vulnerability to cause a denial-of-service on affected macOS systems, potentially disrupting system availability. The vulnerability also has high impact on confidentiality and integrity according to the CVSS vector, though specific details are not provided. No known active exploitation has been reported.
Mitigation Recommendations
A fix is available in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. Users and administrators should update to these versions or later to remediate this vulnerability. No additional mitigation guidance is provided or required beyond applying the official patches.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-07-20T18:09:24.049Z
- State
- PUBLISHED
Threat ID: 6a67c1bf9c2644c7f8cb12d2
Added to database: 07/27/2026, 20:38:23 UTC
Last enriched: 07/29/2026, 23:56:27 UTC
Last updated: 09/11/2026, 22:06:34 UTC
Views: 44
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