Executive brief
A memory management vulnerability in macOS could allow a malicious application to crash the system. This issue affects computers running macOS Sequoia, Sonoma, and Tahoe. If exploited, it results in a denial-of-service, potentially disrupting business operations and causing unsaved data loss.
Technical details
A use-after-free (UAF) vulnerability exists in macOS due to improper memory management. A local attacker can exploit this by running a specially crafted application to trigger the memory corruption. The primary impact of a successful exploit is a denial-of-service (system crash). The issue has been resolved in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6 by improving how the operating system handles memory lifecycle.
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: disclosed
- 2026-07-27: patched