CVE-2026-64738

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Sandbox Escape in macOS Sequoia

Publication date: 2026-07-27

Last updated on: 2026-07-30

Assigner: Apple Inc.

Description

A permissions issue was addressed with additional restrictions. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A malicious app may be able to break out of its sandbox.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-27

Last Modified

2026-07-30

Generated

2026-08-17

AI Q&A

2026-07-28

EPSS Evaluated

2026-08-15

NVD

CVE-2026-64738

EUVD

EUVD-2026-49623

Affected Vendors & Products

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

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This vulnerability is a permissions issue in Apple operating systems where a malicious app could potentially escape its sandbox restrictions. Sandboxing is a security mechanism that isolates apps to limit their access to system resources and data. The issue was addressed in updates to macOS Sequoia, Sonoma, and Tahoe.

Detection Guidance

This vulnerability involves a sandbox escape in macOS. Detection requires checking if your system is running a vulnerable macOS version. Use the command 'sw_vers' to check your macOS version. If it is below Sequoia 15.7.8, Sonoma 14.8.8, or Tahoe 26.6, the system is vulnerable.

Impact Analysis

If exploited, this vulnerability could allow a malicious app to bypass security restrictions and access sensitive data or system functions it should not have access to. This could lead to unauthorized data theft, system compromise, or further malware installation on your device.

Compliance Impact

The provided CVE data does not specify how this vulnerability impacts compliance with standards like GDPR or HIPAA. The issue involves a sandbox escape in macOS, which could potentially lead to unauthorized data access, but no direct compliance implications are mentioned.

Mitigation Strategies

Update to the latest version of macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, or macOS Tahoe 26.6 to address the sandbox escape vulnerability.

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