CVE-2024-40866: Apple macOS

Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days.

The issue was addressed with improved UI. This issue is fixed in Safari 18, macOS Sequoia 15. Visiting a malicious website may lead to address bar spoofing.

Affected products

• Apple macOS: before 15.0 (fixed in 15.0)
• Apple Safari: before 18.0 (fixed in 18.0)

Published 2024-09-17. Last modified 2026-06-17.