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CVE-2021-30998

MEDIUMCVSS 5.3/10EPSS 0.54%

Last modified

CVE-2021-30998 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A S/MIME issue existed in the handling of encrypted email. This issue was addressed with improved selection of the encryption certificate. EPSS estimates a 0.54% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability
0.54%

41.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
AppleIpados< 15.2
AppleIphone Os< 15.2

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-30998?
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.
How severe is CVE-2021-30998?
CVE-2021-30998 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.54% probability of exploitation in the next 30 days.
How do I fix CVE-2021-30998?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-30998?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST