CVE-2026-64733 in iOS
Summary
by MITRE • 07/28/2026
This issue was addressed with improved data protection. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. An app may be able to fingerprint the user.
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Analysis
by VulDB Data Team • 07/28/2026
This vulnerability represents a significant privacy concern that was resolved through enhanced data protection mechanisms across multiple Apple operating systems. The issue stemmed from insufficient safeguards that allowed malicious applications to potentially identify and track users through sophisticated fingerprinting techniques. The flaw existed in the fundamental data handling and user identification processes within Apple's ecosystem, creating opportunities for unauthorized tracking and profiling activities.
The technical implementation of this vulnerability likely involved weaknesses in how device identifiers, browser fingerprints, or application behavior patterns were managed and exposed to third-party applications. This type of vulnerability falls under the broader category of privacy leakage mechanisms that enable persistent tracking across different sessions and applications. The flaw may have been related to how unique device characteristics, system configurations, or behavioral patterns were accessible to apps without proper authorization controls.
From an operational perspective, this vulnerability created substantial risks for user privacy and data protection. Attackers could potentially exploit the fingerprinting capabilities to build detailed profiles of individual users, track their online activities across different platforms, and maintain persistent identification even when users attempted to clear cookies or reset device settings. The impact extended beyond simple tracking to encompass potential identity theft, targeted advertising manipulation, and broader surveillance capabilities that compromised user autonomy and privacy expectations.
The mitigation strategies implemented in iOS 26.6, iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, and watchOS 26.6 focused on strengthening data protection protocols and implementing more robust isolation between applications and user identification mechanisms. These updates likely included enhanced sandboxing controls, improved permission models for accessing device identifiers, and strengthened privacy controls that limit the ability of apps to gather comprehensive fingerprinting data. The fixes address core principles outlined in cybersecurity frameworks such as those referenced in CWE categories related to information exposure and privacy violations, ensuring that applications cannot bypass normal security boundaries to access user identification information.
The resolution demonstrates Apple's commitment to maintaining strong privacy protections through proactive security updates and continuous monitoring of potential vulnerabilities that could compromise user data. This update reinforces the importance of regular system maintenance and timely deployment of security patches to protect against emerging threats in the evolving cybersecurity landscape. The fix aligns with industry best practices for privacy protection and represents a critical component of overall threat mitigation strategies that prevent unauthorized access to personal information through sophisticated tracking mechanisms.