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CVE-2019-8591

HighPublished

A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1. An...

Published: Dec 18, 2019
Updated: Aug 4, 2024
Assigning CNA: apple
Evidence observed: May 21, 2019

Primary CVSS

7.1/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

4.4%

Low · next 30 days

Percentile: 91.0%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1. An application may be able to cause unexpected system termination or write kernel memory.

Sources

used_sockExploit
tfp0 based on CVE-2019-8591/CVE-2019-8605
Apple macOS < 10.14.5 / iOS < 12.3 XNU - Wild-read due to bad cast in stf_ioctlExploit
Google Security Research · multiple · May 21, 2019

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