Executive brief
macOS is the operating system running on Apple Mac computers and is responsible for core system operations and security. A logic flaw in the system can allow malicious apps to cause unexpected shutdowns or system crashes, disrupting user work and potentially causing data loss. This vulnerability affects multiple recent versions of macOS and requires a patch to restore stability.
Technical details
A logic issue in macOS was addressed with improved validation checks. The vulnerability allows an app to trigger unexpected system termination by exploiting insufficient state validation or control-flow checks in the affected subsystem. The attack requires a malicious app to be installed and executed locally on the target system, and no authentication bypass is needed. An attacker can achieve denial of service by crashing the system, disrupting availability. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7, released on September 14, 2026.
Affected products
- Apple macOS Golden Gate before 27
- Apple macOS Sequoia before 15.8
- Apple macOS Tahoe before 26.7
Timeline
- 2026-09-14: disclosed: Published via NVD and Apple Security Support
- 2026-09-14: patched: Fixed in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7