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CVE-2021-30998

MEDIUM
5.3
CVSS Score
Published: August 24, 2021 at 06:51 PM UTC
Updated: June 17, 2026 at 03:51 AM UTC
2 products affected across 1 vendoriPhone OSiPadOS

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.5%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

iPadOS· Apple
95%
v < 15.2
Affected range stops below 15.2, so it looks safe — our inference, not a vendor statement
iPhone OS· Apple
95%
v < 15.2
Affected range stops below 15.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISC
Source: [email protected]
https://support.apple.com/en-us/HT212976

CVSS

5.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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