CVE-2015-6983: Apple iPhone OS

High severity, CVSS 8.8. EPSS: 1.8% chance of exploitation in the next 30 days.

Double free vulnerability in Apple iOS before 9.1 and OS X before 10.11.1 allows attackers to write to arbitrary files via a crafted app that accesses AtomicBufferedFile descriptors.

Affected products

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

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