CVE-2018-4386

HighPublished

Multiple memory corruption issues were addressed with improved memory handling. This issue affected versions prior to iOS 12.1, tvOS 12.1, watchOS 5.1,...

Published: Apr 3, 2019
Updated: Aug 5, 2024
Assigning CNA: apple
Evidence observed: Nov 29, 2018

Primary CVSS

8.8/ 10High

nvd · CVSS 3.0

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS probability estimate

6.6%

Low · next 30 days

Percentile: 93.6%
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

Multiple memory corruption issues were addressed with improved memory handling. This issue affected versions prior to iOS 12.1, tvOS 12.1, watchOS 5.1, Safari 12.0.1, iTunes 12.9.1, iCloud for Windows 7.8.

Sources

Bad_Hoist-WriteUpResearch
A Writeup for Sleirsgoevy's version of the Exploit Implementation of CVE-2018-4386 by Fire30 called Bad_Hoist
WebKit JSC - BytecodeGenerator::hoistSloppyModeFunctionIfNecessary Does not Invalidate the 'ForInContext' ObjectExploit
Google Security Research · multiple · Nov 29, 2018
Sony Playstation 4 (PS4) < 6.72 - WebKit Code Execution (PoC)Exploit
TJ Corley · hardware · Dec 31, 2019

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