CVE-2021-30907: Apple Ipad OS

High severity, CVSS 7.8. EPSS: 1% chance of exploitation in the next 30 days.

An integer overflow was addressed through improved input validation. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. A malicious application may be able to elevate privileges.

Affected products

• Apple Ipad OS: before 14.8.1 (fixed in 14.8.1)
• Apple iPadOS: version 15.0 only
• Apple iPhone OS: before 14.8.1 (fixed in 14.8.1); version 15.0 only
• Apple Mac OS X: before 10.15.7 (fixed in 10.15.7); version 10.15.7 only
• Apple macOS: from 11.0, before 11.6.1 (fixed in 11.6.1); version 12.0 only
• Apple tvOS: before 15.1 (fixed in 15.1)
• Apple watchOS: before 8.1 (fixed in 8.1)

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