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CVE-2018-4242

HighPublished

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...

Published: Jun 8, 2018
Updated: Aug 5, 2024
Assigning CNA: apple
Evidence observed: Aug 5, 2026

Primary CVSS

9.3/ 10High

nvd · CVSS 2.0

AV:N/AC:M/Au:N/C:C/I:C/A:C

EPSS probability estimate

5.0%

Low · next 30 days

Percentile: 91.9%
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

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.

Sources

Look-at-The-XNU-Through-A-Tube-CVE-2018-4242-Write-up-Translation-PoC
Detailed technical write-up and translation of CVE-2018-4242, an XNU kernel vulnerability in AppleHV, with PoC code, reverse engineering analysis, and explanation of system calls, MIG, and IOKit.

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