Out-of-Bounds Read in Apple iOS and macOS Font Processing

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: Apple Inc.

Description

An out-of-bounds read issue was addressed with improved input validation. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, watchOS 27. Processing a maliciously crafted font may result in the disclosure of process memory.

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-2026-84597

Affected Vendors & Products

Vendor	Product	Version / Range
apple	ios	27
apple	ipad_os	27
apple	macos_golden_gate	27
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 vulnerability is an out-of-bounds read issue caused by insufficient input validation. It occurs when processing a maliciously crafted font, potentially allowing an attacker to read process memory.

Impact Analysis

If exploited, this vulnerability could lead to the disclosure of sensitive information stored in process memory. Attackers might access data they should not be able to see, such as passwords or other confidential details.

Mitigation Strategies

Update affected Apple devices to iOS 27, iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, or watchOS 27 to address the out-of-bounds read issue.

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