CVE-2025-43318
📋 TL;DR
This CVE describes a macOS vulnerability where an app with root privileges could bypass entitlement checks to access private information. It affects macOS systems before version 26 (Tahoe). The issue was addressed through improved entitlement validation.
💻 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 app with root privileges could access sensitive user data, system files, or other protected resources it shouldn't have access to.
Likely Case
Privilege escalation scenario where an app gains unauthorized access to protected data or system resources.
If Mitigated
Limited impact if proper app sandboxing and privilege separation are already implemented.
🎯 Exploit Status
Requires root privileges and a malicious app. No public exploit details available based on provided references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Tahoe 26
Vendor Advisory: https://support.apple.com/en-us/125110
Restart Required: No
Instructions:
1. Open System Settings 2. Go to General > Software Update 3. Install macOS Tahoe 26 update 4. Follow on-screen instructions to complete installation
🔧 Temporary Workarounds
Restrict root access
macOSLimit which applications and users have root privileges to reduce attack surface
sudo dscl . -append /Groups/admin GroupMembership username (to add users to admin group)
sudo dscl . -delete /Groups/admin GroupMembership username (to remove users from admin group)
🧯 If You Can't Patch
- Implement strict application allowlisting to prevent unauthorized app execution
- Use privilege separation and run applications with least privilege principles
🔍 How to Verify
Check if Vulnerable:
Check macOS version: if running version before Tahoe 26, system is vulnerableCheck Version:
sw_versVerify Fix Applied:
Verify macOS version is Tahoe 26 or later📡 Detection & Monitoring
Log Indicators:
- Unusual entitlement requests in system logs
- Apps requesting root privileges unexpectedly
- Console.app entries showing entitlement violations
Network Indicators:
- Not applicable - local privilege escalation vulnerability
SIEM Query:
source="macos_system_logs" AND (entitlement OR privilege) AND (violation OR bypass)