CVE-2018-4448

Name: CVE-2018-4448
Creator: NVD / NIST
Published: 2020-10-27T20:15:13.83+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.29%

Last modified Jun 17, 2026

CVE-2018-4448 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A memory initialization issue was addressed with improved memory handling. This issue is fixed in macOS Mojave 10.14.4, Security Update 2019-002 High Sierra, Security Update 2019-002 Sierra, iOS 12.1.1, watchOS 5.1.2, macOS Mojave 10.14.2, Security Update 2018-003 High Sierra, Security Update 2018-006 Sierra, tvOS 12.1.1. EPSS estimates a 0.29% chance of exploitation in the next 30 days.

Description

A memory initialization issue was addressed with improved memory handling. This issue is fixed in macOS Mojave 10.14.4, Security Update 2019-002 High Sierra, Security Update 2019-002 Sierra, iOS 12.1.1, watchOS 5.1.2, macOS Mojave 10.14.2, Security Update 2018-003 High Sierra, Security Update 2018-006 Sierra, tvOS 12.1.1. A local user may be able to read kernel memory.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.29%

20.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Apple	Iphone Os	< 12.1.1
Apple	Mac Os X	>= 10.12.6, < 10.14.4
Apple	Tvos	< 12.1.1
Apple	Watchos	< 5.1.2
Apple	Mac Os X	>= 10.13.6, < 10.14.2

References

https://support.apple.com/en-us/HT209340Vendor Advisory
https://support.apple.com/en-us/HT209341Vendor Advisory
https://support.apple.com/en-us/HT209342Vendor Advisory
https://support.apple.com/en-us/HT209343Vendor Advisory
https://support.apple.com/en-us/HT209600Vendor Advisory
https://support.apple.com/en-us/HT209340Vendor Advisory
https://support.apple.com/en-us/HT209341Vendor Advisory
https://support.apple.com/en-us/HT209342Vendor Advisory
https://support.apple.com/en-us/HT209343Vendor Advisory
https://support.apple.com/en-us/HT209600Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2018-4448?

How severe is CVE-2018-4448?

CVE-2018-4448 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.

How do I fix CVE-2018-4448?

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-2018-4448?

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

Scan your code now

Source: NVD / NIST