CVE-2021-31013: Apple iPadOS

Medium severity, CVSS 5.5. EPSS: 0.8% 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 12.1, iOS 15.2 and iPadOS 15.2, macOS Big Sur 11.6.2. Processing a maliciously crafted font may result in the disclosure of process memory.

Affected products

• Apple iPadOS: before 15.2 (fixed in 15.2)
• Apple iPhone OS: before 15.2 (fixed in 15.2)
• Apple macOS: from 11.0, before 11.6.2 (fixed in 11.6.2); from 12.0.0, before 12.1 (fixed in 12.1)

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