CVE-2017-2423: Apple iPhone OS

Critical severity, CVSS 9.8. EPSS: 1.7% chance of exploitation in the next 30 days.

An issue was discovered in certain Apple products. iOS before 10.3 is affected. macOS before 10.12.4 is affected. The issue involves the "Security" component. It allows remote attackers to bypass intended access restrictions by leveraging a successful result from a SecKeyRawVerify API call with an empty signature.

Affected products

• Apple iPhone OS: up to and including 10.2.1
• Apple Mac OS X: up to and including 10.12.3

Published 2017-04-02. Last modified 2026-06-17.