CVE-2025-43502: Apple Safari Auth Bypass Vulnerability

CVE-2025-43502 Overview

CVE-2025-43502 is a privacy bypass vulnerability affecting multiple Apple platforms including Safari, iOS, iPadOS, macOS Tahoe, and visionOS. The vulnerability allows a malicious application to bypass certain Privacy preferences, potentially exposing sensitive user data without proper authorization. Apple addressed this issue by removing sensitive data that could be leveraged to circumvent privacy controls.

This vulnerability is classified as CWE-284 (Improper Access Control), indicating a failure to properly restrict access to privacy-related settings and data. The attack vector is network-based and requires no user interaction, making it particularly concerning for enterprise environments with managed Apple devices.

Critical Impact

Applications may bypass privacy preferences to access protected user data, including location, contacts, photos, or other sensitive information that would normally require explicit user consent.

Affected Products

• Apple Safari versions prior to 26.1
• Apple iOS and iPadOS versions prior to 26.1
• Apple macOS Tahoe versions prior to 26.1
• Apple visionOS versions prior to 26.1

Discovery Timeline

• 2025-11-04 - CVE-2025-43502 published to NVD
• 2026-04-02 - Last updated in NVD database

Technical Details for CVE-2025-43502

Vulnerability Analysis

The vulnerability stems from improper access control within Apple's privacy framework. Specifically, sensitive data that should have been protected or removed from the system was accessible to applications, allowing them to circumvent the standard privacy preference checks that Apple implements across its operating systems.

Apple's privacy architecture typically requires explicit user consent before applications can access sensitive data categories such as location services, contacts, calendars, photos, and health data. This vulnerability creates a path for applications to bypass these consent mechanisms by leveraging exposed sensitive data within the system.

The network-based attack vector with no required privileges suggests that this vulnerability could potentially be exploited through web content in Safari or through apps that process untrusted network data. The confidentiality impact is high, while integrity and availability remain unaffected, consistent with a privacy bypass rather than a code execution vulnerability.

Root Cause

The root cause is improper access control (CWE-284) where sensitive data was not properly removed or protected from application access. This allowed applications to read or leverage this data to bypass the privacy preference enforcement mechanisms that normally govern access to protected user information.

The issue likely existed in shared framework components used across Safari and the affected operating systems, explaining why the vulnerability impacts multiple Apple platforms simultaneously.

Attack Vector

The attack vector is network-based and requires no privileges or user interaction. A malicious application installed on the device or potentially malicious web content rendered in Safari could exploit this vulnerability to:

1. Access sensitive data that would normally require user privacy consent
2. Bypass TCC (Transparency, Consent, and Control) framework protections
3. Read protected user information without triggering privacy permission prompts

Since no verified exploit code is publicly available, the exact technical mechanics remain undisclosed. Organizations should refer to the Apple Support Article #125632 for additional technical context.

Detection Methods for CVE-2025-43502

Indicators of Compromise

• Unusual application access to protected data categories without corresponding user consent events in system logs
• Applications accessing privacy-sensitive APIs without triggering standard TCC permission dialogs
• Anomalous process behavior where apps read from protected data containers without proper entitlements
• Unexpected network communications following unauthorized data access patterns

Detection Strategies

• Monitor for applications accessing TCC-protected data categories without corresponding consent records in the TCC database
• Implement endpoint detection rules to identify processes bypassing standard privacy framework checks
• Review application entitlements and compare against actual data access patterns to identify privilege misuse
• Deploy behavioral analysis to detect apps exhibiting privacy bypass characteristics

Monitoring Recommendations

• Enable comprehensive logging for TCC framework events and data access operations
• Implement mobile device management (MDM) solutions to track app behavior and privacy-related activities
• Configure SentinelOne agents to monitor for anomalous data access patterns on macOS endpoints
• Regularly audit installed applications for suspicious privacy-related behavior

How to Mitigate CVE-2025-43502

Immediate Actions Required

• Update all affected Apple devices to Safari 26.1, iOS/iPadOS 26.1, macOS Tahoe 26.1, or visionOS 26.1 immediately
• Review installed applications for any suspicious apps that may have exploited this vulnerability
• Audit privacy settings and permissions granted to applications, especially those installed before the patch
• Deploy MDM policies to enforce minimum OS and application versions across managed devices

Patch Information

Apple has released security patches addressing this vulnerability across all affected platforms:

• Safari 26.1 - Refer to Apple Support Article #125638 for Safari-specific update information
• iOS 26.1 and iPadOS 26.1 - Refer to Apple Support Article #125632 for mobile device updates
• macOS Tahoe 26.1 - Refer to Apple Support Article #125634 for macOS update information
• visionOS 26.1 - Refer to Apple Support Article #125640 for visionOS update information

Updates are available through standard Apple software update mechanisms including the App Store for Safari and System Preferences/Settings for operating system updates.

Workarounds

• Remove or disable untrusted applications until patches can be applied to reduce potential attack surface
• Implement strict application allowlisting through MDM to prevent installation of potentially malicious apps
• Limit network access for sensitive devices where immediate patching is not feasible
• Monitor privacy access logs closely for any unauthorized data access until systems are fully patched

# Check current macOS version
sw_vers

# Verify Safari version via command line
/usr/bin/defaults read /Applications/Safari.app/Contents/Info CFBundleShortVersionString

# Force software update check on macOS
softwareupdate --list

# Install available updates
softwareupdate --install --all