CVE-2026-20621: Apple iPadOS

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, visionOS 26.3. An app may be able to cause unexpected system termination or corrupt kernel memory.

Affected products

• Apple iPadOS: before 26.3 (fixed in 26.3)
• Apple iPhone OS: before 26.3 (fixed in 26.3)
• Apple macOS: before 14.8.4 (fixed in 14.8.4); from 15.0, before 15.7.4 (fixed in 15.7.4); from 26.0, before 26.3 (fixed in 26.3)

Published 2026-02-11. Last modified 2026-06-17.