CVE-2019-8639

Name: CVE-2019-8639
Creator: NVD / NIST
Published: 2020-10-27T20:15:16.5+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.22%

Last modified Jun 17, 2026

CVE-2019-8639 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in watchOS 5.2, iCloud for Windows 7.11, iOS 12.2, iTunes 12.9.4 for Windows, Safari 12.1. EPSS estimates a 1.22% chance of exploitation in the next 30 days.

Description

Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in watchOS 5.2, iCloud for Windows 7.11, iOS 12.2, iTunes 12.9.4 for Windows, Safari 12.1. Processing maliciously crafted web content may lead to arbitrary code execution.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.22%

65.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Apple	Icloud	< 7.11
Apple	Itunes	< 12.9.4
Apple	Safari	< 12.1
Apple	Iphone Os	< 12.2
Apple	Watchos	< 5.2

References

https://support.apple.com/en-us/HT209599Vendor Advisory
https://support.apple.com/en-us/HT209602Vendor Advisory
https://support.apple.com/en-us/HT209603Vendor Advisory
https://support.apple.com/en-us/HT209604Vendor Advisory
https://support.apple.com/en-us/HT209605Vendor Advisory
https://support.apple.com/en-us/HT209599Vendor Advisory
https://support.apple.com/en-us/HT209602Vendor Advisory
https://support.apple.com/en-us/HT209603Vendor Advisory
https://support.apple.com/en-us/HT209604Vendor Advisory
https://support.apple.com/en-us/HT209605Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2019-8639?

How severe is CVE-2019-8639?

CVE-2019-8639 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.22% probability of exploitation in the next 30 days.

How do I fix CVE-2019-8639?

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-2019-8639?

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

Scan your code now

Source: NVD / NIST