CVE-2016-4689: Apple iPhone OS

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

An issue was discovered in certain Apple products. iOS before 10.2 is affected. The issue involves the "Mail" component, which does not alert the user to an S/MIME email signature that used a revoked certificate.

Affected products

• Apple iPhone OS: up to and including 10.1.1

Published 2017-02-20. Last modified 2026-06-17.