CVE-2025-43189
📋 TL;DR
This vulnerability allows malicious applications to read kernel memory on macOS systems, potentially exposing sensitive system information. It affects macOS users running versions before the patched releases. The high CVSS score indicates critical severity requiring immediate attention.
💻 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 →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
Full kernel memory disclosure leading to privilege escalation, credential theft, and complete system compromise.
Likely Case
Information disclosure of kernel memory contents, potentially exposing sensitive data and system structures.
If Mitigated
Limited impact with proper application sandboxing and security controls in place.
🎯 Exploit Status
Exploitation requires user interaction to install/run malicious application.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Sequoia 15.6, macOS Sonoma 14.7.7
Vendor Advisory: https://support.apple.com/en-us/124149
Restart Required: Yes
Instructions:
1. Open System Settings 2. Click General 3. Click Software Update 4. Install available updates 5. Restart when prompted
🔧 Temporary Workarounds
Application Restriction
allRestrict installation of untrusted applications via Gatekeeper and System Settings
sudo spctl --master-enable
sudo spctl --enable
🧯 If You Can't Patch
- Implement strict application allowlisting to prevent unauthorized app execution
- Enhance endpoint detection and monitoring for suspicious application behavior
🔍 How to Verify
Check if Vulnerable:
Check macOS version in System Settings > General > AboutCheck Version:
sw_versVerify Fix Applied:
Verify macOS version is 15.6 (Sequoia) or 14.7.7 (Sonoma) or later📡 Detection & Monitoring
Log Indicators:
- Unusual kernel memory access patterns in system logs
- Suspicious application installation/execution events
Network Indicators:
- Not applicable - local exploitation only
SIEM Query:
source="macos_system_logs" AND (event="kernel_memory_access" OR process="suspicious_app")