CVE-2016-1788: Apple iPhone OS

Medium severity, CVSS 5.9. EPSS: 2% chance of exploitation in the next 30 days.

Messages in Apple iOS before 9.3, OS X before 10.11.4, and watchOS before 2.2 does not properly implement a cryptographic protection mechanism, which allows remote attackers to read message attachments via vectors related to duplicate messages.

Affected products

• Apple iPhone OS: up to and including 9.2.1
• Apple Mac OS X: up to and including 10.11.3
• Apple watchOS: up to and including 2.1

Published 2016-03-24. Last modified 2026-06-17.