CVE-2021-30796: Apple iPhone OS

Medium severity, CVSS 6.5. EPSS: 1.6% chance of exploitation in the next 30 days.

A logic issue was addressed with improved validation. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. Processing a maliciously crafted image may lead to a denial of service.

Affected products

• Apple iPhone OS: before 14.7 (fixed in 14.7)
• Apple Mac OS X: version 10.14 only; version 10.14.0 only; version 10.14.1 only; version 10.14.2 only; version 10.14.3 only; version 10.14.4 only; …
• Apple macOS: from 11.0, before 11.5 (fixed in 11.5)

Published 2021-09-08. Last modified 2026-06-17.