CVE-2021-31009: Apple iPadOS

Critical severity, CVSS 9.8. EPSS: 1.2% chance of exploitation in the next 30 days.

Multiple issues were addressed by removing HDF5. This issue is fixed in iOS 15.2 and iPadOS 15.2, macOS Monterey 12.1. Multiple issues in HDF5.

Affected products

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

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