Executive brief
A security vulnerability has been identified in macOS that could allow a malicious application to cause the computer to crash or shut down unexpectedly. This issue affects the core operating system's memory handling. While the primary impact is a disruption of service (system instability), it represents a flaw in how the system manages internal data. Users should update to the latest versions of macOS Sequoia, Sonoma, or Tahoe to resolve this issue.
Technical details
A type confusion vulnerability existed in macOS due to improper memory handling. A local application could exploit this flaw to trigger an unexpected system termination (denial of service). The issue was addressed by improving memory handling logic within the operating system. The vulnerability is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. Exploitation requires the ability to run an application on the target system.
Affected products
- Apple macOS Sequoia Before 15.7.8
- Apple macOS Sonoma Before 14.8.8
- Apple macOS Tahoe Before 26.6
Timeline
- 2026-07-27: advisory: NVD publication date
- 2026-07-27: patched: Apple released updates for Sequoia, Sonoma, and Tahoe