CVE-2018-4398

Name: CVE-2018-4398
Creator: NVD / NIST
Published: 2019-04-03T18:29:13.08+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.63%

Last modified Jun 17, 2026

CVE-2018-4398 is a vulnerability of currently unknown severity. An issue existed in the method for determining prime numbers. This issue was addressed by using pseudorandom bases for testing of primes. EPSS estimates a 1.63% chance of exploitation in the next 30 days.

Description

An issue existed in the method for determining prime numbers. This issue was addressed by using pseudorandom bases for testing of primes. This issue affected versions prior to iOS 12.1, macOS Mojave 10.14.1, tvOS 12.1, watchOS 5.1, iTunes 12.9.1, iCloud for Windows 7.8.

Metrics

EPSS Probability

1.63%

73.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Apple	Iphone Os	< 12.1
Apple	Mac Os X	< 10.14.1
Apple	Tvos	< 12.1
Apple	Watchos	< 5.1
Apple	Icloud	< 7.8
Apple	Itunes	< 12.9.1

References

https://support.apple.com/kb/HT209192Vendor Advisory
https://support.apple.com/kb/HT209193Vendor Advisory
https://support.apple.com/kb/HT209194Vendor Advisory
https://support.apple.com/kb/HT209195Vendor Advisory
https://support.apple.com/kb/HT209197Vendor Advisory
https://support.apple.com/kb/HT209198Vendor Advisory
https://support.apple.com/kb/HT209192Vendor Advisory
https://support.apple.com/kb/HT209193Vendor Advisory
https://support.apple.com/kb/HT209194Vendor Advisory
https://support.apple.com/kb/HT209195Vendor Advisory
https://support.apple.com/kb/HT209197Vendor Advisory
https://support.apple.com/kb/HT209198Vendor Advisory

Timeline

Published: Apr 3, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-4398?

How severe is CVE-2018-4398?

Severity scoring for CVE-2018-4398 is pending analysis. The EPSS model estimates a 1.63% probability of exploitation in the next 30 days.

How do I fix CVE-2018-4398?

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-2018-4398?

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

Scan your code now

Source: NVD / NIST