CVE-2015-3774: Apple Mac OS X

Medium severity, CVSS 4.8. EPSS: 0.5% chance of exploitation in the next 30 days.

The Dictionary app in Apple OS X before 10.10.5 does not use HTTPS, which allows man-in-the-middle attackers to obtain sensitive information by sniffing the network or spoof word definitions by modifying the client-server data stream.

Affected products

• Apple Mac OS X: up to and including 10.10.4

Published 2015-08-16. Last modified 2026-06-17.