CVE-2026-84597

Analyzed Analyzed - Analysis Complete

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

Publication date: 2026-09-14

Last updated on: 2026-09-16

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:
Percentile:

Meta Information

Published

2026-09-14

Last Modified

2026-09-16

Generated

2026-10-05

AI Q&A

2026-09-15

EPSS Evaluated

2026-10-04

NVD

CVE-2026-84597

Affected Vendors & Products

Vendor	Product	Version / Range
apple	ipados	to 27.0 (exc)
apple	iphone_os	to 27.0 (exc)
apple	macos	to 27.0 (exc)
apple	visionos	to 27.0 (exc)
apple	watchos	to 27.0 (exc)
apple	tvos	to 27.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.

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.

Detection Guidance

This vulnerability involves an out-of-bounds read issue in font processing. Detection requires checking system versions against the patched releases (iOS 27, iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, watchOS 27). No specific commands are provided in the context to detect this issue directly.

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.

Compliance Impact

The vulnerability involves an out-of-bounds read due to insufficient input validation, potentially exposing process memory when processing malicious fonts. This could lead to unauthorized data disclosure, which may impact compliance with GDPR (data protection) and HIPAA (health information privacy) by risking unauthorized access to sensitive information.

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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