Executive brief
A memory handling vulnerability in macOS could allow an attacker to cause a complete system crash or corrupt sensitive kernel memory. This affects the core operating system used on Apple computers. If exploited, it could lead to a loss of system availability or allow for further unauthorized access to the device's most protected operations.
Technical details
A memory corruption vulnerability exists in the macOS kernel due to improper memory handling. An attacker could leverage this flaw to cause unexpected system termination (denial of service) or corrupt kernel memory, potentially leading to local privilege escalation. The vulnerability was addressed by Apple through improved memory management logic. The issue affects multiple versions of macOS and requires local access to exploit. Patches are available in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6.
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: advisory
- 2026-07-27: patched