Out-of-Bounds Write in macOS Golden Gate

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: Apple Inc.

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27. Mounting a maliciously crafted exFAT volume may cause unexpected system termination or kernel memory disclosure.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-14

Last Modified

2026-09-14

Generated

2026-09-15

AI Q&A

2026-09-15

EPSS Evaluated

N/A

NVD

CVE-2026-86901

Affected Vendors & Products

Vendor	Product	Version / Range
apple	macos_golden_gate	27

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This is an out-of-bounds write vulnerability in macOS Golden Gate 27. It occurs when mounting a maliciously crafted exFAT volume. The flaw allows memory corruption beyond allocated bounds, potentially leading to system crashes or exposure of kernel memory.

Impact Analysis

If exploited, this vulnerability could cause your system to terminate unexpectedly or disclose sensitive kernel memory. This might lead to data leaks or denial-of-service conditions on affected macOS systems.

Mitigation Strategies

Update macOS Golden Gate 27 to the latest version to address the out-of-bounds write issue in exFAT volume handling.

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