CVE-2018-4242

HIGH

macOS < 10.13.5 - Memory Corruption in Hypervisor

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-4242. PoCs published by yeonnic.

AI-analyzed exploit summary This repository contains a write-up and PoC for CVE-2018-4242, a vulnerability in macOS that allows arbitrary code execution with kernel privileges. The PoC demonstrates the exploitation of a use-after-free vulnerability in the AppleHV kernel extension.

Description

An issue was discovered in certain Apple products. macOS before 10.13.5 is affected. The issue involves the "Hypervisor" component. It allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.

Exploits (1)

nomisec WRITEUP 1 stars
by yeonnic · poc
https://github.com/yeonnic/Look-at-The-XNU-Through-A-Tube-CVE-2018-4242-Write-up-Translation-

This repository contains a write-up and PoC for CVE-2018-4242, a vulnerability in macOS that allows arbitrary code execution with kernel privileges. The PoC demonstrates the exploitation of a use-after-free vulnerability in the AppleHV kernel extension.

Classification
Writeup 100%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: macOS (XNU kernel) versions prior to 10.13.4
No auth needed
Prerequisites: Access to a vulnerable macOS system
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1042004
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1041027
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT208849

Scores

CVSS v3 7.8
EPSS 0.0803
EPSS Percentile 92.2%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-119
Status published
Products (1)
apple/mac_os_x < 10.13.5
Published Jun 08, 2018
Tracked Since Feb 18, 2026