Buffer Overflow in iOS 27 via Malicious Image Processing

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: Apple Inc.

Description

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, watchOS 27. Processing a maliciously crafted image 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-2026-84571

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 is a buffer overflow vulnerability caused by insufficient bounds checking when processing images. It occurs when an application fails to properly validate the size of input data, allowing it to write beyond allocated memory buffers. This can lead to crashes or unexpected behavior in affected systems.

Impact Analysis

If you use iOS 27, iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, or watchOS 27, processing a malicious image could cause apps to terminate unexpectedly. This may disrupt device functionality or lead to data loss in some cases.

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 buffer overflow issue.

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