CVE-2025-43257: An app may be able to break out of its sandbox in Apple macOS
CVE-2025-43257 is a high-severity vulnerability in Apple macOS that allows an application to potentially break out of its sandbox due to improper handling of symbolic links. This issue has been addressed with improved symlink handling and fixed in macOS Sequoia 15. 6. The vulnerability has a CVSS score of 8. 7, indicating a significant risk if exploited. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
This vulnerability (CVE-2025-43257) in Apple macOS involves a sandbox escape caused by improper handling of symbolic links (CWE-59). An application with limited privileges may exploit this flaw to break out of its sandbox, potentially leading to high confidentiality, integrity, and limited availability impacts. The issue was resolved by Apple through improved symlink handling in macOS Sequoia 15.6.
Potential Impact
Successful exploitation could allow an app to escape its sandbox, resulting in high impact on confidentiality and integrity, and low impact on availability. This could enable unauthorized access to system resources or data beyond the app's intended restrictions.
Mitigation Recommendations
Apple has released an official fix for this vulnerability in macOS Sequoia 15.6. Users and administrators should update to this version or later to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
CVE-2025-43257: An app may be able to break out of its sandbox in Apple macOS
Description
CVE-2025-43257 is a high-severity vulnerability in Apple macOS that allows an application to potentially break out of its sandbox due to improper handling of symbolic links. This issue has been addressed with improved symlink handling and fixed in macOS Sequoia 15. 6. The vulnerability has a CVSS score of 8. 7, indicating a significant risk if exploited. There are no known exploits in the wild at this time.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2025-43257) in Apple macOS involves a sandbox escape caused by improper handling of symbolic links (CWE-59). An application with limited privileges may exploit this flaw to break out of its sandbox, potentially leading to high confidentiality, integrity, and limited availability impacts. The issue was resolved by Apple through improved symlink handling in macOS Sequoia 15.6.
Potential Impact
Successful exploitation could allow an app to escape its sandbox, resulting in high impact on confidentiality and integrity, and low impact on availability. This could enable unauthorized access to system resources or data beyond the app's intended restrictions.
Mitigation Recommendations
Apple has released an official fix for this vulnerability in macOS Sequoia 15.6. Users and administrators should update to this version or later to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2025-04-16T15:24:37.096Z
- Cvss Version
- null
- State
- PUBLISHED
Threat ID: 69ceb81be6bfc5ba1df6de85
Added to database: 4/2/2026, 6:40:27 PM
Last enriched: 4/9/2026, 10:52:41 PM
Last updated: 5/20/2026, 12:42:33 PM
Views: 51
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