CVE-2026-20688
Sandbox Escape via Path Validation Flaw in Apple OS Components
Publication date: 2026-03-25
Last updated on: 2026-03-26
Assigner: Apple Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| apple | ipados | to 26.4 (exc) |
| apple | iphone_os | to 26.4 (exc) |
| apple | macos | From 14.0 (inc) to 14.8.5 (exc) |
| apple | macos | From 15.0 (inc) to 15.7.5 (exc) |
| apple | macos | From 26.0 (inc) to 26.4 (exc) |
| apple | visionos | to 26.4 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-22 | The product 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 product 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a path handling issue that was addressed by improving validation mechanisms. It allows an app to potentially break out of its sandbox, which is a security boundary designed to isolate apps from each other and the system.
How can this vulnerability impact me? :
If exploited, this vulnerability could allow an app to escape its sandbox restrictions, potentially gaining unauthorized access to system resources or data that should be isolated. This could lead to privacy breaches or unauthorized actions on the device.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update your Apple devices to the fixed versions: iOS 26.4, iPadOS 26.4, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4, or visionOS 26.4.
Applying these updates will address the path handling issue and prevent apps from breaking out of their sandbox.