CVE-2021-30928: Apple iCloud

High severity, CVSS 7.8. EPSS: 1.4% chance of exploitation in the next 30 days.

A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.6, watchOS 8, tvOS 15, iOS 14.8 and iPadOS 14.8, iOS 15 and iPadOS 15. Processing a maliciously crafted image may lead to arbitrary code execution.

Affected products

• Apple iCloud: version 13.0 only
• Apple iPadOS: before 14.8 (fixed in 14.8)
• Apple iPhone OS: before 15.0 (fixed in 15.0)
• Apple macOS: from 11.0, before 11.6 (fixed in 11.6)
• 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.