CVE-2018-4271

Name: CVE-2018-4271
Creator: NVD / NIST
Published: 2019-04-03T18:29:04.487+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.61%

Last modified Jun 17, 2026

CVE-2018-4271 is a vulnerability of currently unknown severity. Multiple memory corruption issues were addressed with improved input validation. This issue affected versions prior to iOS 11.4.1, tvOS 11.4.1, watchOS 4.3.2, Safari 11.1.2, iTunes 12.8 for Windows, iCloud for Windows 7.6.. EPSS estimates a 1.61% chance of exploitation in the next 30 days.

Description

Multiple memory corruption issues were addressed with improved input validation. This issue affected versions prior to iOS 11.4.1, tvOS 11.4.1, watchOS 4.3.2, Safari 11.1.2, iTunes 12.8 for Windows, iCloud for Windows 7.6.

Metrics

EPSS Probability

1.61%

72.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Apple	Safari	< 11.1.2
Apple	Iphone Os	< 11.4.1
Apple	Tvos	< 11.4.1
Apple	Watchos	< 4.3.2
Apple	Icloud	< 7.6
Apple	Itunes	< 12.8

References

https://support.apple.com/kb/HT208932Vendor Advisory
https://support.apple.com/kb/HT208933Vendor Advisory
https://support.apple.com/kb/HT208934Vendor Advisory
https://support.apple.com/kb/HT208935Vendor Advisory
https://support.apple.com/kb/HT208936Vendor Advisory
https://support.apple.com/kb/HT208938Vendor Advisory
https://support.apple.com/kb/HT208932Vendor Advisory
https://support.apple.com/kb/HT208933Vendor Advisory
https://support.apple.com/kb/HT208934Vendor Advisory
https://support.apple.com/kb/HT208935Vendor Advisory
https://support.apple.com/kb/HT208936Vendor Advisory
https://support.apple.com/kb/HT208938Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2018-4271?

How severe is CVE-2018-4271?

Severity scoring for CVE-2018-4271 is pending analysis. The EPSS model estimates a 1.61% probability of exploitation in the next 30 days.

How do I fix CVE-2018-4271?

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-2018-4271?

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

Scan your code now

Source: NVD / NIST