CVE-2019-8542

Name: CVE-2019-8542
Creator: NVD / NIST
Published: 2019-12-18T18:15:24.99+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.05%

Last modified Jun 17, 2026

CVE-2019-8542 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 12.2, macOS Mojave 10.14.4, tvOS 12.2, watchOS 5.2, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. EPSS estimates a 1.05% chance of exploitation in the next 30 days.

Description

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 12.2, macOS Mojave 10.14.4, tvOS 12.2, watchOS 5.2, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. A malicious application may be able to elevate privileges.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

1.05%

60.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Apple	Icloud	< 7.11
Apple	Itunes	< 12.9.4
Apple	Iphone Os	< 12.2
Apple	Mac Os X	< 10.14.4
Apple	Tvos	< 12.2
Apple	Watchos	< 5.2

References

https://support.apple.com/HT209599Vendor Advisory
https://support.apple.com/HT209600Vendor Advisory
https://support.apple.com/HT209601Vendor Advisory
https://support.apple.com/HT209602Vendor Advisory
https://support.apple.com/HT209604Vendor Advisory
https://support.apple.com/HT209605Vendor Advisory
https://support.apple.com/HT209599Vendor Advisory
https://support.apple.com/HT209600Vendor Advisory
https://support.apple.com/HT209601Vendor Advisory
https://support.apple.com/HT209602Vendor Advisory
https://support.apple.com/HT209604Vendor Advisory
https://support.apple.com/HT209605Vendor Advisory

Timeline

Published: Dec 18, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-8542?

How severe is CVE-2019-8542?

CVE-2019-8542 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.05% probability of exploitation in the next 30 days.

How do I fix CVE-2019-8542?

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-2019-8542?

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

Scan your code now

Source: NVD / NIST