Out-of-Bounds Write in Apple iOS and macOS

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 iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. Processing a maliciously crafted file may lead to unexpected app termination.

CVSS Scores

EPSS Scores

Probability:
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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-2026-84575

Affected Vendors & Products

Vendor	Product	Version / Range
apple	ios	27
apple	ipad_os	27
apple	macos_golden_gate	27
apple	macos_sequoia	15.8
apple	macos_tahoe	26.7
apple	tv_os	27
apple	vision_os	27
apple	watch_os	27

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This is an out-of-bounds write vulnerability caused by insufficient bounds checking. Processing a specially crafted file could allow an attacker to write data outside the intended memory area, potentially crashing the application.

Impact Analysis

The vulnerability may cause unexpected app termination when processing malicious files. This could lead to denial-of-service conditions or potential data corruption if the affected app handles sensitive information.

Mitigation Strategies

Update affected Apple devices to the latest versions: iOS 27, iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, or watchOS 27. Avoid processing untrusted files until updates are applied.

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