CVE-2016-1797: Apple Mac OS X

High severity, CVSS 7.8. EPSS: 1.7% chance of exploitation in the next 30 days.

Apple Type Services (ATS) in Apple OS X before 10.11.5 allows attackers to bypass intended FontValidator sandbox-policy restrictions and execute arbitrary code in a privileged context via a crafted app.

Affected products

• Apple Mac OS X: up to and including 10.11.4

Published 2016-05-20. Last modified 2026-06-17.