CVE-2026-20667
Modified Modified - Updated After Analysis
Sandbox Escape via Logic Flaw in Apple watchOS and macOS

Publication date: 2026-02-11

Last updated on: 2026-04-02

Assigner: Apple Inc.

Description
A logic issue was addressed with improved checks. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, watchOS 26.3. An app may be able to break out of its sandbox.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-02-11
Last Modified
2026-04-02
Generated
2026-06-16
AI Q&A
2026-02-12
EPSS Evaluated
2026-06-15
NVD
CVE-2026-20667
EUVD
EUVD-2026-5930
Affected Vendors & Products
Showing 6 associated CPEs
Vendor Product Version / Range
apple ipados to 26.3 (exc)
apple iphone_os to 26.3 (exc)
apple watchos to 26.3 (exc)
apple macos to 14.8.4 (exc)
apple macos From 15.0 (inc) to 15.7.4 (exc)
apple macos From 26.0 (inc) to 26.3 (exc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-693 The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability is a logic issue that was addressed by implementing improved checks. It allows an app to potentially break out of its sandbox, which is a security mechanism designed to isolate apps and restrict their access to system resources and data.

Impact Analysis

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 unauthorized actions or data exposure on affected Apple devices.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, update your Apple devices to the fixed versions: watchOS 26.3, macOS Tahoe 26.3, macOS Sonoma 14.8.4, macOS Sequoia 15.7.4, iOS 26.3, or iPadOS 26.3.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-20667. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart