CVE-2016-1800: Apple Mac OS X

High severity, CVSS 8.8. EPSS: 3.7% chance of exploitation in the next 30 days.

Captive Network Assistant in Apple OS X before 10.11.5 mishandles a custom URL scheme, which allows user-assisted remote attackers to execute arbitrary code via unspecified vectors.

Affected products

• Apple Mac OS X: up to and including 10.11.4

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