CVE-2015-6978: Apple iPhone OS

Medium severity, CVSS 6.8. EPSS: 4.8% chance of exploitation in the next 30 days.

FontParser in Apple iOS before 9.1 and OS X before 10.11.1 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted font file, a different vulnerability than CVE-2015-6976, CVE-2015-6977, CVE-2015-6990, CVE-2015-6991, CVE-2015-6993, CVE-2015-7008, CVE-2015-7009, CVE-2015-7010, and CVE-2015-7018.

Affected products

• Apple iPhone OS: up to and including 9.0.2
• Apple Mac OS X: up to and including 10.11.0
• Apple watchOS: up to and including 2.0

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