CVE-2015-3798: Apple iPhone OS

High severity, CVSS 7.5. EPSS: 13.3% chance of exploitation in the next 30 days.

The TRE library in Libc in Apple iOS before 8.4.1 and OS X before 10.10.5 allows context-dependent attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted regular expression, a different vulnerability than CVE-2015-3796 and CVE-2015-3797.

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.