CVE-2025-43417: 
macOS vulnerability analysis and mitigation

CVE-2025-43417 is a path handling vulnerability in Apple's File Bookmark component affecting macOS, classified as a path traversal issue (CWE-22). A malicious app may exploit this flaw to access user-sensitive data without authorization. The vulnerability was discovered by Ron Elemans and disclosed by Apple in February 2026. It affects macOS versions prior to Sonoma 14.8.4 and was also addressed in macOS Tahoe 26.2. It carries a CVSS v3.1 base score of 5.5 (Medium) (Apple Advisory 126350, Apple Advisory 125886).

The root cause is improper limitation of a pathname to a restricted directory (CWE-22), specifically a path handling issue in the macOS File Bookmark component. Apple addressed the flaw with improved logic in path handling, suggesting that the original code failed to adequately validate or sanitize file paths before resolving them, potentially allowing traversal outside intended directory boundaries. Exploitation requires local access and user interaction, meaning a malicious app installed on the system must be run by the user to trigger the vulnerable code path. No public technical write-ups or proof-of-concept code have been identified at this time (Apple Advisory 126350, Apple Advisory 125886).

Successful exploitation allows a malicious application to access user-sensitive data outside its permitted scope by abusing the File Bookmark path handling logic. The impact is limited to confidentiality — there is no integrity or availability impact — and exploitation is constrained to the local system context of the logged-in user. While lateral movement potential is low, unauthorized access to sensitive files (e.g., documents, credentials, or private data) could facilitate further attacks or privacy violations (Apple Advisory 126350).

Apple has released patches addressing CVE-2025-43417 in macOS Sonoma 14.8.4 (released February 11, 2026) and macOS Tahoe 26.2 (released December 12, 2025). Users should update their macOS installations to these versions or later as the primary remediation. No configuration-based workarounds have been published by Apple; upgrading to a patched release is the recommended and only known mitigation (Apple Advisory 126350, Apple Advisory 125886).