CVE-2015-5757: Apple iPhone OS

High severity, CVSS 9.3. EPSS: 2.8% chance of exploitation in the next 30 days.

libpthread in Apple iOS before 8.4.1 and OS X before 10.10.5 allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via an app that uses a crafted syscall to interfere with locking.

Affected products

• Apple iPhone OS: up to and including 8.4
• Apple Mac OS X: up to and including 10.10.4

Published 2015-08-17. Last modified 2026-06-17.