CVE-2024-43525
📋 TL;DR
This vulnerability in the Windows Mobile Broadband Driver allows an attacker to execute arbitrary code remotely on affected systems. Attackers could exploit this to gain control over vulnerable Windows devices. This affects Windows systems with mobile broadband functionality enabled.
💻 Affected Systems
- Windows Mobile Broadband Driver
📦 What is this software?
Windows 10 1809 by Microsoft
Windows 10 1809 by Microsoft
Windows 10 21h2 by Microsoft
Windows 10 22h2 by Microsoft
Windows 11 21h2 by Microsoft
Windows 11 22h2 by Microsoft
Windows 11 23h2 by Microsoft
Windows 11 24h2 by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining SYSTEM privileges, installing malware, stealing data, and using the system as a foothold for lateral movement.
Likely Case
Local privilege escalation or remote code execution leading to malware installation and data exfiltration.
If Mitigated
Limited impact due to network segmentation, endpoint protection, and lack of mobile broadband usage.
🎯 Exploit Status
Exploitation requires network access to the vulnerable system or tricking user to connect to malicious network.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Microsoft's monthly security updates for specific KB numbers
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43525
Restart Required: Yes
Instructions:
1. Apply latest Windows security updates via Windows Update. 2. For enterprise: Deploy patches through WSUS or SCCM. 3. Verify installation by checking installed updates in Control Panel.
🔧 Temporary Workarounds
Disable Mobile Broadband Interface
windowsDisable the mobile broadband network adapter if not needed
netsh mbn set profileparameter name="ProfileName" connectionmode=manual
Network Segmentation
allIsolate systems with mobile broadband from critical networks
🧯 If You Can't Patch
- Implement strict network segmentation for systems with mobile broadband
- Deploy endpoint detection and response (EDR) solutions to detect exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check Windows Update history for missing security patches related to CVE-2024-43525Check Version:
wmic os get caption,version,buildnumberVerify Fix Applied:
Verify the specific KB patch is installed via 'wmic qfe list' or PowerShell 'Get-HotFix'📡 Detection & Monitoring
Log Indicators:
- Unusual network connections from mobile broadband interface
- Driver loading anomalies in System logs
- Process creation from unexpected locations
Network Indicators:
- Suspicious traffic from mobile broadband interfaces
- Unexpected outbound connections from affected systems
SIEM Query:
EventID=7045 OR EventID=4697 | where ServiceName contains "mbn" OR ProcessName contains "wwan"