CVE-2026-65396

Analyzed Analyzed - Analysis Complete

Buffer Overflow in macOS Golden Gate 27

Publication date: 2026-10-20

Last updated on: 2026-11-03

Assigner: Apple Inc.

Description

A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to cause unexpected system termination.

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Meta Information

Published

2026-10-20

Last Modified

2026-11-03

Generated

2026-11-09

AI Q&A

2026-10-20

EPSS Evaluated

2026-11-07

NVD

CVE-2026-65396

EUVD

EUVD-2026-104702

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-119	The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Attack-Flow Graph

Executive Summary

This is a buffer overflow vulnerability caused by insufficient size validation. An application could exploit this to write data beyond the intended memory buffer, potentially leading to crashes or unexpected system behavior.

Detection Guidance

This vulnerability is specific to Apple macOS versions before Golden Gate 27, Sequoia 15.8, and Tahoe 26.7. To detect it, check your macOS version using the command 'sw_vers'. If your version is below the specified updates, your system may be vulnerable.

Impact Analysis

An attacker could exploit this to cause an app to crash or terminate unexpectedly. This may lead to denial of service or instability on the affected system.

Compliance Impact

The provided CVE data does not specify how this vulnerability impacts compliance with standards like GDPR or HIPAA. The issue involves a buffer overflow in macOS, which could lead to unexpected system termination, but no direct compliance implications are mentioned.

Mitigation Strategies

Update to the latest version of macOS Golden Gate 27, macOS Sequoia 15.8, or macOS Tahoe 26.7 to address the buffer overflow issue.

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