How severe is CVE-2017-13874?

CVE-2017-13874 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2017-13874 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-13874?

CVE-2017-13874 affects Apple Iphone Os. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-13874?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-13874 published?

CVE-2017-13874 was published on 2017-12-25 and last updated on 2026-06-17.

CVE-2017-13874

CVE-2017-13874 is a high-severity vulnerability in Apple Iphone Os with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apple Iphone Os
Published: 2017-12-25
Last modified: 2026-06-17

Description

An issue was discovered in certain Apple products. iOS before 11.2 is affected. The issue involves the "Mail" component. It might allow remote attackers to bypass an intended encryption protection mechanism by leveraging incorrect S/MIME certificate selection.

Frequently asked questions

What is CVE-2017-13874?: An issue was discovered in certain Apple products. iOS before 11.2 is affected. The issue involves the "Mail" component. It might allow remote attackers to bypass an intended encryption protection mechanism by leveraging incorrect S/MIME certificate selection.
How severe is CVE-2017-13874?: CVE-2017-13874 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2017-13874 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-13874?: CVE-2017-13874 affects Apple Iphone Os. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-13874?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-13874 published?: CVE-2017-13874 was published on 2017-12-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

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