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CVE-2018-4280

HighPublished

A memory corruption issue was addressed with improved memory handling. This issue affected versions prior to iOS 11.4.1, macOS High Sierra 10.13.6, tvOS...

Published: Apr 3, 2019
Updated: Aug 5, 2024
Assigning CNA: apple
Evidence observed: Aug 8, 2026

Primary CVSS

7.8/ 10High

nvd · CVSS 3.0

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

EPSS probability estimate

2.7%

Low · next 30 days

Percentile: 85.2%
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 memory corruption issue was addressed with improved memory handling. This issue affected versions prior to iOS 11.4.1, macOS High Sierra 10.13.6, tvOS 11.4.1, watchOS 4.3.2.

Sources

launchd-portrepExploit
CVE-2018-4280: Mach port replacement vulnerability in launchd on macOS 10.13.5 leading to local privilege escalation and SIP bypass.
blanketExploit
CVE-2018-4280: Mach port replacement vulnerability in launchd on iOS 11.2.6 leading to sandbox escape, privilege escalation, and codesigning bypass.

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