Apple OS Sandbox Escape via Path Validation (iOS 26.6, macOS Sequoia 15.7.8)
CVE-2026-64740 Published on July 27, 2026
A parsing issue in the handling of directory paths was addressed with improved path validation. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6. A malicious app may be able to break out of its sandbox.
Vulnerability Analysis
CVE-2026-64740 is exploitable with local system access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
What is a Directory traversal Vulnerability?
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CVE-2026-64740 has been classified to as a Directory traversal vulnerability or weakness.
Products Associated with CVE-2026-64740
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Affected Versions
Apple iOS and iPadOS:- Before 26.6 is affected.
- Before 14.8.8 is affected.
- Before 15.7.8 is affected.
- Before 26.6 is affected.
- Before 26.6 is affected.