CVE-2020-3864

Name: CVE-2020-3864
Creator: NVD / NIST
Published: 2020-10-27T21:15:15.167+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2020-3864 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A logic issue was addressed with improved validation. This issue is fixed in iCloud for Windows 7.17, iTunes 12.10.4 for Windows, iCloud for Windows 10.9.2, tvOS 13.3.1, Safari 13.0.5, iOS 13.3.1 and iPadOS 13.3.1. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

A logic issue was addressed with improved validation. This issue is fixed in iCloud for Windows 7.17, iTunes 12.10.4 for Windows, iCloud for Windows 10.9.2, tvOS 13.3.1, Safari 13.0.5, iOS 13.3.1 and iPadOS 13.3.1. A DOM object context may not have had a unique security origin.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.40%

32.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-346

Affected Software

Vendor	Product	Versions
Apple	Icloud	< 7.17
Apple	Icloud	>= 10.0, < 10.9.2
Apple	Itunes	< 12.10.4
Apple	Safari	< 13.0.5
Apple	Ipados	< 13.3.1
Apple	Iphone Os	< 13.3.1
Apple	Tvos	< 13.3.1
Redhat	Enterprise Linux Desktop	7.0
Redhat	Enterprise Linux Server	7.0
Redhat	Enterprise Linux Workstation	7.0

References

https://support.apple.com/en-us/HT210918Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT210920Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT210922Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT210923Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT210947Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT210948Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT210918Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT210920Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT210922Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT210923Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT210947Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT210948Release Notes, Vendor Advisory

Timeline

Published: Oct 27, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-3864?

How severe is CVE-2020-3864?

CVE-2020-3864 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2020-3864?

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-2020-3864?

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

Scan your code now

Source: NVD / NIST