CVE-2015-5831: Apple iPhone OS

Medium severity, CVSS 5.0. EPSS: 1.6% chance of exploitation in the next 30 days.

NetworkExtension in the kernel in Apple iOS before 9 does not properly initialize an unspecified data structure, which allows attackers to obtain sensitive memory-layout information via a crafted app.

Affected products

• Apple iPhone OS: up to and including 8.4.1
• Apple Mac OS X: up to and including 10.10.5

Published 2015-09-18. Last modified 2026-06-17.