CVE-2025-43190: 
macOS vulnerability analysis and mitigation

CVE-2025-43190 is a security vulnerability discovered in Apple's operating systems that was disclosed and patched on September 15, 2025. The vulnerability affects multiple Apple platforms including iOS 26, iPadOS 26, macOS Sonoma 14.8, macOS Sequoia 15.7, visionOS 26, watchOS 26, and macOS Tahoe 26. It was identified as a parsing issue in the handling of directory paths in the Spell Check component (Apple Support, NVD).

The vulnerability stems from a parsing issue in the handling of directory paths within the Spell Check component of affected Apple operating systems. The technical issue was addressed by implementing improved path validation mechanisms. The vulnerability has been assigned a CVSS 3.1 Base Score of 5.5 (Medium) with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N. The Common Weakness Enumeration (CWE) associated with this vulnerability is CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (NVD).

The vulnerability could allow a malicious application to access sensitive user data. This security flaw potentially exposes user information to unauthorized access, compromising data confidentiality (Apple Support, NVD).

Apple has released security updates to address this vulnerability across all affected platforms. Users are advised to update to iOS 26, iPadOS 26, macOS Sonoma 14.8, macOS Sequoia 15.7, visionOS 26, watchOS 26, or macOS Tahoe 26, depending on their device. These updates include improved path validation mechanisms to prevent exploitation (Apple Support).