CVE-2020-9920: Apple iPadOS

Critical severity, CVSS 9.1. EPSS: 1.9% chance of exploitation in the next 30 days.

A path handling issue was addressed with improved validation. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6, watchOS 6.2.8. A malicious mail server may overwrite arbitrary mail files.

Affected products

• Apple iPadOS: before 13.6 (fixed in 13.6)
• Apple iPhone OS: before 13.6 (fixed in 13.6)
• Apple Mac OS X: before 10.15.6 (fixed in 10.15.6)
• Apple watchOS: before 6.2.8 (fixed in 6.2.8)

Published 2020-10-22. Last modified 2026-06-17.