CVE-2026-84498

CVE-2026-84498 is a security vulnerability affecting Apple's macOS operating system, specifically within the Universal Disk Format (UDF) file system component. Discovered by security researcher Nathaniel Oh, the flaw allows a local application to bypass standard memory boundaries and disclose sensitive kernel memory. The vulnerability primarily impacts systems running macOS Tahoe. Apple resolved the issue in its October 2026 security updates by implementing improved memory handling mechanisms. To protect against potential exploitation that could lead to unauthorized information disclosure, users are encouraged to update their devices to macOS Tahoe 26.7.2 or other corresponding patched versions of Apple's operating systems.