CVE-2015-6989: Apple iPhone OS

Medium severity, CVSS 6.8. EPSS: 2.3% chance of exploitation in the next 30 days.

Grand Central Dispatch in Apple iOS before 9.1, OS X before 10.11.1, and watchOS before 2.0.1 allows attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted package that is mishandled during dispatch calls.

Affected products

• Apple iPhone OS: up to and including 9.0.2
• Apple Mac OS X: up to and including 10.11.0
• Apple watchOS: up to and including 2.0.0

Published 2015-10-23. Last modified 2026-06-17.