CVE-2021-1844: Apple iPadOS

High severity, CVSS 8.8. EPSS: 2.4% chance of exploitation in the next 30 days.

A memory corruption issue was addressed with improved validation. This issue is fixed in iOS 14.4.1 and iPadOS 14.4.1, Safari 14.0.3 (v. 14610.4.3.1.7 and 15610.4.3.1.7), watchOS 7.3.2, macOS Big Sur 11.2.3. Processing maliciously crafted web content may lead to arbitrary code execution.

Affected products

• Apple iPadOS: before 14.4.1 (fixed in 14.4.1)
• Apple iPhone OS: before 14.4.1 (fixed in 14.4.1)
• Apple macOS: before 11.2.3 (fixed in 11.2.3)
• Apple Safari: before 14.0.3 (fixed in 14.0.3)
• Apple tvOS: before 14.5 (fixed in 14.5)
• Apple watchOS: before 7.3.2 (fixed in 7.3.2)
• Debian Debian Linux: version 10.0 only
• Fedoraproject Fedora: version 33 only

Published 2021-04-02. Last modified 2026-06-17.