CVE-2021-30884: Apple iPadOS

Medium severity, CVSS 4.7. EPSS: 1.2% chance of exploitation in the next 30 days.

The issue was resolved with additional restrictions on CSS compositing. This issue is fixed in tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Visiting a maliciously crafted website may reveal a user's browsing history.

Affected products

• Apple iPadOS: before 15.0 (fixed in 15.0)
• Apple iPhone OS: before 15.0 (fixed in 15.0)
• Apple macOS: before 12.0.1 (fixed in 12.0.1)
• Apple tvOS: before 15.0 (fixed in 15.0)
• Apple watchOS: before 8.0 (fixed in 8.0)

Published 2021-08-24. Last modified 2026-06-17.