CVE-2021-30997: Apple iPadOS

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

A S/MIME issue existed in the handling of encrypted email. This issue was addressed by not automatically loading some MIME parts. This issue is fixed in iOS 15.2 and iPadOS 15.2. An attacker may be able to recover plaintext contents of an S/MIME-encrypted e-mail.

Affected products

• Apple iPadOS: before 15.2 (fixed in 15.2)
• Apple iPhone OS: before 15.2 (fixed in 15.2)

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