CVE-2018-4266

Name: CVE-2018-4266
Creator: NVD / NIST
Published: 2019-04-03T18:29:04.003+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.78%

Last modified Jun 17, 2026

CVE-2018-4266 is a vulnerability of currently unknown severity. A race condition was addressed with additional validation. This issue affected versions prior toiVersions prior to: OS 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 1.78% chance of exploitation in the next 30 days.

Description

A race condition was addressed with additional validation. This issue affected versions prior toiVersions prior to: OS 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

1.78%

75.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-362

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-2018-4266?

How severe is CVE-2018-4266?

Severity scoring for CVE-2018-4266 is pending analysis. The EPSS model estimates a 1.78% probability of exploitation in the next 30 days.

How do I fix CVE-2018-4266?

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-2018-4266?

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

Scan your code now

Source: NVD / NIST