CVE-2026-84566

Undergoing Analysis Undergoing Analysis - In Progress

Memory Corruption in Apple iOS and macOS

Publication date: 2026-09-14

Last updated on: 2026-09-18

Assigner: Apple Inc.

Description

The issue was addressed with improved memory handling. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. A local attacker may be able to cause unexpected system termination or corrupt kernel memory.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-14

Last Modified

2026-09-18

Generated

2026-10-05

AI Q&A

2026-09-15

EPSS Evaluated

2026-10-03

NVD

CVE-2026-84566

Affected Vendors & Products

Vendor	Product	Version / Range
apple	ipados	to 26.7 (exc)
apple	iphone_os	to 26.7 (exc)
apple	macos	From 15.0 (inc) to 15.8 (exc)
apple	macos	From 26.0 (inc) to 26.7 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability involves a flaw in memory handling that could allow a local attacker to cause unexpected system termination or corrupt kernel memory. It was addressed in specific versions of iOS, iPadOS, and macOS.

Detection Guidance

This vulnerability is specific to Apple operating systems and involves kernel memory corruption. Detection typically requires checking system logs for unexpected terminations or memory corruption events after applying updates. No direct commands are provided in the context to detect this issue.

Impact Analysis

An attacker could exploit this to crash your device or corrupt critical system memory, potentially leading to data loss or instability. It requires local access to the device.

Compliance Impact

The provided CVE data does not specify any direct impact on compliance with standards like GDPR or HIPAA. The vulnerability involves potential kernel memory corruption or system termination, which could indirectly affect data integrity or availability.

Mitigation Strategies

Update affected Apple devices to the latest versions: iOS 26.7 or later, iPadOS 26.7 or later, iOS 27 or later, iPadOS 27 or later, macOS Golden Gate 27, macOS Sequoia 15.8, or macOS Tahoe 26.7. This vulnerability is addressed through improved memory handling in these updates.

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