CVE-2021-30911: Apple iPadOS

Medium severity, CVSS 5.5. EPSS: 0.9% chance of exploitation in the next 30 days.

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Monterey 12.0.1, Security Update 2021-007 Catalina, iOS 15.1 and iPadOS 15.1, macOS Big Sur 11.6.1. Processing a maliciously crafted USD file may disclose memory contents.

Affected products

• Apple iPadOS: before 15.1 (fixed in 15.1)
• Apple iPhone OS: before 15.1 (fixed in 15.1)
• 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

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