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CVE-2023-40404

HighPublished

A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Sonoma 14.1. An app may be able to execute arbitrary code...

Published: Oct 25, 2023
Updated: Feb 13, 2025
Assigning CNA: apple
Evidence observed: Aug 8, 2026

Primary CVSS

7.8/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS probability estimate

1.1%

Low · next 30 days

Percentile: 64.6%
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

A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Sonoma 14.1. An app may be able to execute arbitrary code with kernel privileges.

Sources

GenEtherExploitPoC
is a PoC exploit for the macOS vulnerability CVE-2023-40404. This PoC leverages IOKit APIs to interact with the IOUserEthernetResource network service, manipulating the system's network interfaces

Responsible use

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