CVE-2025-43523
📋 TL;DR
A macOS permissions vulnerability allows applications to access sensitive user data they shouldn't have permission to view. This affects macOS systems running vulnerable versions before the security updates. The issue stems from insufficient access restrictions that apps can potentially bypass.
💻 Affected Systems
- macOS
📦 What is this software?
Macos by Apple
macOS is Apple's desktop and laptop operating system powering Mac computers used by millions of professionals, developers, creative professionals, and enterprise users worldwide. Built on a Unix foundation with the Darwin kernel and modern Cocoa frameworks, macOS delivers a seamless ecosystem integr...
Learn more about Macos →⚠️ Risk & Real-World Impact
Worst Case
Malicious or compromised applications could exfiltrate sensitive user data including personal files, credentials, or private information stored on the system.
Likely Case
Legitimate applications with bugs or unintended behaviors could inadvertently access and potentially leak user data they shouldn't have access to.
If Mitigated
With proper application sandboxing and security controls, only minimal data exposure would occur even if the vulnerability is triggered.
🎯 Exploit Status
Exploitation requires an attacker to get a malicious or compromised application running on the target system. No public exploit code has been disclosed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Tahoe 26.2 or macOS Sequoia 15.7.3
Vendor Advisory: https://support.apple.com/en-us/125886
Restart Required: Yes
Instructions:
1. Open System Settings > General > Software Update. 2. Install available updates. 3. Restart your Mac when prompted.
🔧 Temporary Workarounds
Application Sandboxing Enforcement
allUse macOS privacy controls to restrict application access to sensitive data locations
Application Whitelisting
allOnly allow trusted, signed applications to run on affected systems
🧯 If You Can't Patch
- Implement strict application control policies to only allow trusted, signed applications
- Use macOS Privacy settings to explicitly deny sensitive data access to all non-essential applications
🔍 How to Verify
Check if Vulnerable:
Check macOS version in System Settings > General > About. If version is earlier than Tahoe 26.2 or Sequoia 15.7.3, system is vulnerable.Check Version:
sw_versVerify Fix Applied:
Verify macOS version shows Tahoe 26.2 or Sequoia 15.7.3 or later in System Settings > General > About.📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns by applications in Unified Logs
- Privacy-related denials or allowances in system logs
Network Indicators:
- Unexpected outbound data transfers from applications that shouldn't have access to sensitive data
SIEM Query:
source="macos" AND (event="file_access" OR event="privacy_violation") AND app NOT IN (trusted_applications_list)