CVE-2006-4392

What it is

The Mach kernel, as used in operating systems including (1) Mac OS X 10.4 through 10.4.7 and (2) OpenStep before 4.2, allows local users to gain privileges via a parent process that forces an exception in a setuid child and uses Mach exception ports to modify the child's thread context and task address space in a way that causes the child to call a parent-controlled function.

At a glance

Exploitability

Can be exploited locally on the machine without logging in. High risk of data exposure, data tampering, service disruption.

Exploit odds

1.6% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2006-10-03 04:02 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:29 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.6% in the next 30 days (EPSS).
• Severity: 7.2 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2006-10-03 04:02 UTC

Last modified

2026-06-16 22:29 UTC

Exploit probability

1.6% · EPSS, next 30 days

Record status

Modified

Affected

• Apple Mac Os X 10.4
• Apple Mac Os X 10.4.1
• Apple Mac Os X 10.4.2
• Apple Mac Os X 10.4.3
• Apple Mac Os X 10.4.4
• Apple Mac Os X 10.4.5
• Apple Mac Os X 10.4.6
• Apple Mac Os X 10.4.7

Attack profile CVSS 2.0 · 7.2

Attack vector

Local

Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2006-4392.md and follow it. Check whether this project is affected by CVE-2006-4392. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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