CVE-2023-40400: Apple iPadOS

Critical severity, CVSS 9.8. EPSS: 1.8% chance of exploitation in the next 30 days.

This issue was addressed with improved checks. This issue is fixed in tvOS 17, iOS 17 and iPadOS 17, watchOS 10, macOS Sonoma 14. A remote user may cause an unexpected app termination or arbitrary code execution.

Affected products

• Apple iPadOS: before 16.6 (fixed in 16.6)
• Apple iPhone OS: before 16.6 (fixed in 16.6)
• Apple macOS: before 14.0 (fixed in 14.0)
• Apple tvOS: before 17.0 (fixed in 17.0)
• Apple watchOS: before 10.0 (fixed in 10.0)

Published 2023-09-27. Last modified 2026-06-17.