CVE-2026-20627: Apple iPadOS

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

An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, visionOS 26.3, watchOS 26.3. An app may be able to access sensitive user data.

Affected products

• Apple iPadOS: before 26.3 (fixed in 26.3)
• Apple iPhone OS: before 26.3 (fixed in 26.3)
• Apple macOS: from 14.0, before 14.8.4 (fixed in 14.8.4); from 26.0, before 26.3 (fixed in 26.3)
• Apple visionOS: before 26.3 (fixed in 26.3)
• Apple watchOS: before 26.3 (fixed in 26.3)

Published 2026-02-11. Last modified 2026-08-21.