CVE-2022-26766: Apple iPadOS

Medium severity, CVSS 5.5. EPSS: 2.7% chance of exploitation in the next 30 days.

A certificate parsing issue was addressed with improved checks. This issue is fixed in tvOS 15.5, iOS 15.5 and iPadOS 15.5, Security Update 2022-004 Catalina, watchOS 8.6, macOS Big Sur 11.6.6, macOS Monterey 12.4. A malicious app may be able to bypass signature validation.

Affected products

• Apple iPadOS: before 15.5 (fixed in 15.5)
• Apple iPhone OS: before 15.5 (fixed in 15.5)
• Apple Mac OS X: before 10.15.7 (fixed in 10.15.7); version 10.15.7 only
• Apple macOS: from 11.0, before 11.6.6 (fixed in 11.6.6); from 12.0, before 12.4 (fixed in 12.4)
• Apple tvOS: before 15.5 (fixed in 15.5)
• Apple watchOS: before 8.6 (fixed in 8.6)

Published 2022-05-26. Last modified 2026-06-17.