CVE-2026-84538

Analyzed Analyzed - Analysis Complete

Denial-of-Service in macOS Golden Gate 27

Publication date: 2026-09-14

Last updated on: 2026-09-15

Assigner: Apple Inc.

Description

A denial-of-service issue was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. A remote attacker may be able to cause a denial-of-service.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-14

Last Modified

2026-09-15

Generated

2026-10-05

AI Q&A

2026-09-15

EPSS Evaluated

2026-10-04

NVD

CVE-2026-84538

Affected Vendors & Products

Vendor	Product	Version / Range
apple	macos	From 15.0 (inc) to 15.8 (exc)
apple	macos	From 26.0 (inc) to 26.7 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Attack-Flow Graph

Executive Summary

This is a denial-of-service vulnerability caused by insufficient input validation. A remote attacker could exploit it to crash the system by sending specially crafted input, making the service unavailable.

Detection Guidance

This CVE describes a denial-of-service issue in macOS versions Golden Gate 27, Sequoia 15.8, and Tahoe 26.7. Detection requires checking if your system is running one of these vulnerable versions. Use the command 'sw_vers' to check your macOS version. If your version is below the patched releases, the system is vulnerable.

Impact Analysis

If exploited, it could cause your macOS system to become unresponsive or crash, leading to loss of access to critical services and applications until the system is rebooted.

Compliance Impact

The provided CVE data does not specify any direct impact on compliance with standards like GDPR or HIPAA. The vulnerability is a denial-of-service issue with improved input validation, which may cause system unavailability but does not explicitly mention data exposure or privacy violations.

Mitigation Strategies

Update affected macOS versions to macOS Golden Gate 27, macOS Sequoia 15.8, or macOS Tahoe 26.7 or later to address the denial-of-service issue.

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