CVE-2025-43521
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-12-12

Last updated on: 2026-04-02

Assigner: Apple Inc.

Description
A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. This issue is fixed in macOS Sequoia 15.7.3, macOS Tahoe 26.2. An app may be able to access sensitive user data.
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Meta Information
Published
2025-12-12
Last Modified
2026-04-02
Generated
2026-06-16
AI Q&A
2025-12-13
EPSS Evaluated
2026-06-15
NVD
CVE-2025-43521
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
apple macos to 15.7.3 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-347 The product does not verify, or incorrectly verifies, the cryptographic signature for data.
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Compliance Impact

The vulnerability could allow an application to access sensitive user data by bypassing security restrictions, which may lead to non-compliance with data protection standards and regulations such as GDPR and HIPAA. The fix, implemented via additional code-signing restrictions, helps prevent unauthorized access to sensitive information, thereby supporting compliance with these regulations. [1]

Executive Summary

This vulnerability is a downgrade issue affecting Intel-based Mac computers, where an application may bypass security measures due to insufficient code-signing restrictions. It was addressed by adding stricter code-signing requirements in macOS Sequoia 15.7.3.

Impact Analysis

An application exploiting this vulnerability may be able to access sensitive user data on affected Intel-based Mac computers, potentially leading to unauthorized data exposure.

Mitigation Strategies

Update your Intel-based Mac computers to macOS Sequoia 15.7.3 or later, as this version includes the fix with additional code-signing restrictions to prevent the vulnerability.

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