What’s Vulnerable › Vulnerabilities
CVE-2021-30997
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.7% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2021-08-24 · updated 2026-06-17
- Weakness: CWE-312
Description
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
How to fix
Upgrade to a fixed version: Apple iPadOS 15.2; Apple Iphone Os 15.2. Check the vendor advisory for mitigations.
References
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