CVE-2021-30889: Apple iPadOS

High severity, CVSS 8.8. EPSS: 1.9% chance of exploitation in the next 30 days.

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in macOS Monterey 12.0.1, iOS 15.1 and iPadOS 15.1, watchOS 8.1, tvOS 15.1. Processing maliciously crafted web content may lead to arbitrary code execution.

Affected products

• Apple iPadOS: before 15.1 (fixed in 15.1)
• Apple iPhone OS: before 15.1 (fixed in 15.1)
• Apple macOS: before 12.0.1 (fixed in 12.0.1)
• 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.