CVE-2026-43806

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Denial of Service in macOS Tahoe

Publication date: 2026-07-27

Last updated on: 2026-07-30

Assigner: Apple Inc.

Description

A denial of service issue was addressed by removing the vulnerable code. This issue is fixed in macOS Tahoe 26.6. A local attacker may be able to cause a denial of service.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-07-27

Last Modified

2026-07-30

Generated

2026-08-17

AI Q&A

2026-07-28

EPSS Evaluated

2026-08-15

NVD

CVE-2026-43806

EUVD

EUVD-2026-49615

Affected Vendors & Products

Vendor	Product	Version / Range
apple	macos	From 26.0 (inc) to 26.6 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-400	The product does not properly control the allocation and maintenance of a limited resource.

Attack-Flow Graph

Executive Summary

This is a denial of service vulnerability in macOS Tahoe 26.6 where a local attacker could exploit flawed code to crash the system or render it unresponsive.

Detection Guidance

This vulnerability is addressed by removing the vulnerable code in macOS Tahoe 26.6. Detection would involve checking if your system is running a vulnerable version of macOS Tahoe. Use the command 'sw_vers' to check your macOS version. If your version is below 26.6, the system may be vulnerable.

Impact Analysis

A successful exploit could cause your macOS Tahoe system to freeze or reboot unexpectedly, disrupting normal use and potentially leading to data loss.

Compliance Impact

The provided CVE data does not specify any direct impact on compliance with standards like GDPR or HIPAA. The vulnerability is a local denial of service issue in macOS Tahoe, which may affect system availability but does not explicitly mention data exposure or privacy violations.

Mitigation Strategies

Update to macOS Tahoe 26.6 or later to remove the vulnerable code and address the denial of service issue.

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