Executive brief
A memory handling vulnerability in macOS could allow a remote user to cause a system crash or corrupt sensitive kernel memory. This affects the core operating system of Mac computers, potentially leading to service disruptions or unauthorized access to system-level data. Apple has released security updates to address this issue across several versions of macOS.
Technical details
A memory handling vulnerability exists in the macOS kernel. A remote attacker can exploit this flaw to cause a denial-of-service (system termination) or corrupt kernel memory, which could potentially lead to arbitrary code execution with kernel privileges. The root cause is improper memory management, which Apple addressed with improved memory handling logic. The vulnerability is reachable over the network without requiring local access. Fixes are available in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6.
Affected products
- Apple macOS Sequoia < 15.7.8
- Apple macOS Sonoma < 14.8.8
- Apple macOS Tahoe < 26.6
Timeline
- 2026-07-27: disclosed
- 2026-07-27: patched