CVE-2026-64702: An app may be able to break out of its sandbox in Apple macOS
An access issue was addressed with additional sandbox restrictions. 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 break out of its sandbox.
AI Analysis
Technical Summary
CVE-2026-64702 is a critical sandbox escape vulnerability in Apple macOS. The issue stems from insufficient access restrictions that may allow an app to break out of its sandbox environment. Apple has fixed this vulnerability by implementing additional sandbox restrictions in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. The vulnerability has a CVSS 3.1 base score of 9.8, reflecting its critical nature with network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation of this vulnerability could allow a malicious application to escape the sandbox containment, potentially leading to unauthorized access to system resources, data compromise, and full system compromise. The high CVSS score of 9.8 indicates critical impact across confidentiality, integrity, and availability.
Mitigation Recommendations
Apply the official fixes by updating to macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, or macOS Tahoe 26.6, where the vulnerability has been addressed with additional sandbox restrictions. No other mitigation guidance is provided or required as the issue is fixed in these versions.
CVE-2026-64702: An app may be able to break out of its sandbox in Apple macOS
Description
An access issue was addressed with additional sandbox restrictions. 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 break out of its sandbox.
CVSS v3.1
Score 9.8critical
Affected software
Apple
macOS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-64702 is a critical sandbox escape vulnerability in Apple macOS. The issue stems from insufficient access restrictions that may allow an app to break out of its sandbox environment. Apple has fixed this vulnerability by implementing additional sandbox restrictions in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. The vulnerability has a CVSS 3.1 base score of 9.8, reflecting its critical nature with network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation of this vulnerability could allow a malicious application to escape the sandbox containment, potentially leading to unauthorized access to system resources, data compromise, and full system compromise. The high CVSS score of 9.8 indicates critical impact across confidentiality, integrity, and availability.
Mitigation Recommendations
Apply the official fixes by updating to macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, or macOS Tahoe 26.6, where the vulnerability has been addressed with additional sandbox restrictions. No other mitigation guidance is provided or required as the issue is fixed in these versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-07-20T18:09:24.049Z
- State
- PUBLISHED
Threat ID: 6a67c1bf9c2644c7f8cb12cd
Added to database: 07/27/2026, 20:38:23 UTC
Last enriched: 07/29/2026, 23:30:20 UTC
Last updated: 09/10/2026, 20:02:30 UTC
Views: 57
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