CVE-2018-4447

Severity: high (CVSS 7.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-04-03 · updated 2026-06-17
Weakness: CWE-119

Description

A memory corruption issue was addressed with improved state management. This issue affected versions prior to iOS 12.1.1, macOS Mojave 10.14.2, tvOS 12.1.1, watchOS 5.1.2.

Affected products

Apple Iphone Os: before 12.1.1 — fixed in 12.1.1
macOS: before 10.14.2 — fixed in 10.14.2
Apple tvOS: before 12.1.1 — fixed in 12.1.1
Apple watchOS: before 5.1.2 — fixed in 5.1.2

How to fix

Upgrade to a fixed version: Apple Iphone Os 12.1.1; macOS 10.14.2; Apple tvOS 12.1.1; Apple watchOS 5.1.2. Check the vendor advisory for mitigations.

References

https://support.apple.com/kb/HT209340
https://support.apple.com/kb/HT209341
https://support.apple.com/kb/HT209342
https://support.apple.com/kb/HT209343
https://support.apple.com/kb/HT209340
https://support.apple.com/kb/HT209341
https://support.apple.com/kb/HT209342
https://support.apple.com/kb/HT209343

Get alerted when CVE-2018-4447 or the next vulnerability affects your stack