CVE-2019-8749

Name: CVE-2019-8749
Creator: NVD / NIST
Published: 2020-10-27T20:15:18.453+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.48%

Last modified Jun 17, 2026

CVE-2019-8749 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Multiple memory corruption issues were addressed with improved input validation. This issue is fixed in macOS Catalina 10.15, iOS 13, iCloud for Windows 7.14, iCloud for Windows 10.7, tvOS 13, macOS Catalina 10.15.1, Security Update 2019-001, and Security Update 2019-006, watchOS 6, iTunes 12.10.1 for Windows. EPSS estimates a 1.48% chance of exploitation in the next 30 days.

Description

Multiple memory corruption issues were addressed with improved input validation. This issue is fixed in macOS Catalina 10.15, iOS 13, iCloud for Windows 7.14, iCloud for Windows 10.7, tvOS 13, macOS Catalina 10.15.1, Security Update 2019-001, and Security Update 2019-006, watchOS 6, iTunes 12.10.1 for Windows. Multiple issues in libxml2.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.48%

70.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Apple	Icloud	< 7.14
Apple	Icloud	>= 10.0, < 10.7
Apple	Itunes	< 12.10.1
Apple	Safari	< 13.0.1
Apple	Iphone Os	< 13.0
Apple	Tvos	< 13
Apple	Watchos	< 6.0

References

https://support.apple.com/en-us/HT210604Vendor Advisory
https://support.apple.com/en-us/HT210606Vendor Advisory
https://support.apple.com/en-us/HT210607Vendor Advisory
https://support.apple.com/en-us/HT210634Vendor Advisory
https://support.apple.com/en-us/HT210635Vendor Advisory
https://support.apple.com/en-us/HT210636Vendor Advisory
https://support.apple.com/en-us/HT210637Vendor Advisory
https://support.apple.com/en-us/HT210722Vendor Advisory
https://support.apple.com/en-us/HT210604Vendor Advisory
https://support.apple.com/en-us/HT210606Vendor Advisory
https://support.apple.com/en-us/HT210607Vendor Advisory
https://support.apple.com/en-us/HT210634Vendor Advisory
https://support.apple.com/en-us/HT210635Vendor Advisory
https://support.apple.com/en-us/HT210636Vendor Advisory
https://support.apple.com/en-us/HT210637Vendor Advisory
https://support.apple.com/en-us/HT210722Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2019-8749?

How severe is CVE-2019-8749?

CVE-2019-8749 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.48% probability of exploitation in the next 30 days.

How do I fix CVE-2019-8749?

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-2019-8749?

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

Scan your code now

Source: NVD / NIST