CVE-2015-5839: Apple iPhone OS

Medium severity, CVSS 5.0. EPSS: 1.7% chance of exploitation in the next 30 days.

dyld in Apple iOS before 9 allows attackers to bypass a code-signing protection mechanism via an app that places a crafted signature in an executable file.

Affected products

• Apple iPhone OS: up to and including 8.4.1
• Apple Mac OS X: up to and including 10.10.5
• Apple watchOS: version 1.0 only

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