CVE-2026-20665: Apple iPadOS

Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days.

This issue was addressed through improved state management. This issue is fixed in Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. Processing maliciously crafted web content may prevent Content Security Policy from being enforced.

Affected products

• Apple iPadOS: before 18.7.7 (fixed in 18.7.7); from 26.0, before 26.4 (fixed in 26.4)
• Apple iPhone OS: before 18.7.7 (fixed in 18.7.7); from 26.0, before 26.4 (fixed in 26.4)
• Apple macOS: before 26.4 (fixed in 26.4)
• Apple Safari: before 26.4 (fixed in 26.4)
• Apple tvOS: before 26.4 (fixed in 26.4)
• Apple visionOS: before 26.4 (fixed in 26.4)
• Apple watchOS: before 26.4 (fixed in 26.4)

Published 2026-03-25. Last modified 2026-06-17.