What’s Vulnerable › Vulnerabilities
CVE-2021-30998
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2021-08-24 · updated 2026-06-17
Description
A S/MIME issue existed in the handling of encrypted email. This issue was addressed with improved selection of the encryption certificate. This issue is fixed in iOS 15.2 and iPadOS 15.2. A sender's email address may be leaked when sending an S/MIME encrypted email using a certificate with more than one email address.
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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