Executive brief
A vulnerability in macOS could allow a malicious application to crash the computer or corrupt sensitive kernel memory. This affects the core operating system used on Apple laptops and desktops. If exploited, it could lead to system instability or allow an attacker to gain deeper control over the device.
Technical details
A memory corruption vulnerability exists in the macOS kernel due to improper memory handling. A local malicious application can exploit this flaw to trigger a system crash (denial of service) or potentially corrupt kernel memory, which may lead to privilege escalation. The issue was addressed by improving memory management logic. 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: patched