CVE-2024-43523
📋 TL;DR
This vulnerability in the Windows Mobile Broadband Driver allows attackers to execute arbitrary code remotely on affected systems. It affects Windows devices with mobile broadband hardware/software. Attackers could potentially take control of vulnerable systems.
💻 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
Full system compromise with attacker gaining SYSTEM privileges, installing malware, stealing data, and using the system as a pivot point for lateral movement.
Likely Case
Local privilege escalation or remote code execution leading to malware installation, data theft, or system disruption.
If Mitigated
Limited impact due to network segmentation, endpoint protection, and lack of mobile broadband hardware in many enterprise environments.
🎯 Exploit Status
Exploitation requires specific conditions and likely some level of access. No public exploits known at this time.
🛠️ 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-2024-43523
Restart Required: Yes
Instructions:
1. Apply latest Windows security updates via Windows Update. 2. For enterprise: Deploy through WSUS or Microsoft Endpoint Configuration Manager. 3. Verify installation via Windows Update history.
🔧 Temporary Workarounds
Disable Mobile Broadband Interface
windowsDisable mobile broadband hardware if not needed
Disable via Device Manager: Network adapters -> Mobile Broadband Adapter -> Right-click -> Disable device
🧯 If You Can't Patch
- Segment networks to limit exposure of systems with mobile broadband hardware
- Implement strict endpoint protection and monitoring on affected systems
🔍 How to Verify
Check if Vulnerable:
Check Windows Update history for missing security updates related to CVE-2024-43523Check Version:
wmic qfe list | findstr KBVerify Fix Applied:
Verify KB number from Microsoft advisory is installed via Windows Update history or 'wmic qfe list'📡 Detection & Monitoring
Log Indicators:
- Unusual driver loading events
- Mobile broadband driver crashes
- Suspicious network connections from mobile broadband interfaces
Network Indicators:
- Unexpected traffic from mobile broadband interfaces
- Anomalous outbound connections
SIEM Query:
EventID=7036 AND (ServiceName contains 'WwanSvc' OR ServiceName contains 'wwan') AND (Message contains 'stopped' OR Message contains 'started')