CVE-2024-40849
Received Received - Intake
Race Condition in macOS Sequoia Allows Sandbox Escape

Publication date: 2026-04-02

Last updated on: 2026-04-03

Assigner: Apple Inc.

Description
A race condition was addressed with additional validation. This issue is fixed in macOS Sequoia 15.1. An app may be able to break out of its sandbox.
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Meta Information
Published
2026-04-02
Last Modified
2026-04-03
Generated
2026-06-16
AI Q&A
2026-04-02
EPSS Evaluated
2026-06-15
NVD
CVE-2024-40849
EUVD
EUVD-2024-55521
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
apple macos to 15.1 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-362 The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
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Executive Summary

This vulnerability is a race condition issue in macOS Sequoia that was addressed by adding additional validation. Due to this flaw, an application may be able to break out of its sandbox, which is a security mechanism designed to isolate apps and limit their access to system resources.

Impact Analysis

If exploited, this vulnerability could allow an application to escape its sandbox restrictions. This means the app could potentially access or modify data and system resources beyond its intended limits, leading to unauthorized actions or data exposure.

Mitigation Strategies

The vulnerability is fixed in macOS Sequoia 15.1. To mitigate this vulnerability, you should update your system to macOS Sequoia 15.1 or later.

Compliance Impact

This vulnerability allows an app to potentially break out of its sandbox due to a race condition, which could lead to unauthorized access or exposure of sensitive data.

Such unauthorized access or data exposure could impact compliance with data protection standards and regulations like GDPR and HIPAA, which require strict controls on data confidentiality and integrity.

However, specific details on how this vulnerability affects compliance with these standards are not provided.

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