CVE-2026-84628

Analyzed Analyzed - Analysis Complete

Sandbox Escape in Apple iOS 27 via System Keychain Access

Publication date: 2026-09-14

Last updated on: 2026-09-23

Assigner: Apple Inc.

Description

An authorization issue was addressed with improved state management. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, watchOS 27. A sandboxed app may be able to access the System Keychain.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-14

Last Modified

2026-09-23

Generated

2026-10-05

AI Q&A

2026-09-15

EPSS Evaluated

2026-10-04

NVD

CVE-2026-84628

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-UNKNOWN

Attack-Flow Graph

Executive Summary

This is an authorization issue caused by poor state management in Apple's operating systems. A sandboxed app could potentially access the System Keychain, which stores sensitive credentials and data.

Detection Guidance

This vulnerability is specific to Apple operating systems and relates to sandboxed apps accessing the System Keychain. Detection would require checking if your devices are running vulnerable versions of iOS, iPadOS, macOS, tvOS, visionOS, or watchOS. Update to the fixed versions mentioned (OS version 27 or later) to mitigate the issue.

Impact Analysis

If exploited, a malicious app could steal stored passwords, encryption keys, or other sensitive data from the System Keychain. This could lead to unauthorized access to accounts, personal information, or secure services.

Compliance Impact

The vulnerability allows a sandboxed app to access the System Keychain, which could lead to unauthorized access to sensitive data. This may impact compliance with GDPR (data protection) and HIPAA (health data privacy) by increasing the risk of data breaches or unauthorized data exposure.

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 authorization issue and prevent sandboxed apps from accessing the System Keychain.

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