CVE-2024-43537
📋 TL;DR
This vulnerability in the Windows Mobile Broadband Driver allows attackers to cause a denial of service (system crash) by sending specially crafted requests. It affects Windows systems with mobile broadband hardware or drivers installed. Attackers need local access to exploit this vulnerability.
💻 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 21h2 by Microsoft
Windows 10 21h2 by Microsoft
Windows 10 22h2 by Microsoft
Windows 10 22h2 by Microsoft
Windows 10 22h2 by Microsoft
Windows 11 21h2 by Microsoft
Windows 11 21h2 by Microsoft
Windows 11 22h2 by Microsoft
Windows 11 22h2 by Microsoft
Windows 11 23h2 by Microsoft
Windows 11 23h2 by Microsoft
Windows 11 24h2 by Microsoft
Windows 11 24h2 by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
Complete system crash requiring reboot, potentially causing data loss or service disruption on affected systems.
Likely Case
Local denial of service resulting in system instability or crash, requiring manual intervention to restore functionality.
If Mitigated
Minimal impact with proper access controls and patching in place.
🎯 Exploit Status
Requires local access and knowledge of driver interaction. No public exploit code available at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply latest Windows security updates from Microsoft
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43537
Restart Required: Yes
Instructions:
1. Open Windows Update settings. 2. Check for updates. 3. Install all available security updates. 4. Restart system when prompted.
🔧 Temporary Workarounds
Disable Mobile Broadband Hardware
windowsRemove or disable mobile broadband hardware/drivers if not needed
Device Manager > Network adapters > Right-click mobile broadband device > Disable device
🧯 If You Can't Patch
- Restrict local access to systems with mobile broadband hardware
- Implement strict user privilege controls to limit who can interact with drivers
🔍 How to Verify
Check if Vulnerable:
Check if mobile broadband hardware is present in Device Manager under Network adaptersCheck Version:
winverVerify Fix Applied:
Verify Windows Update history shows latest security updates installed and system version matches patched versions📡 Detection & Monitoring
Log Indicators:
- System crash logs (Event ID 41)
- Driver failure events in System logs
- Unexpected system reboots
Network Indicators:
- None - local exploitation only
SIEM Query:
EventID=41 OR (EventID=7034 AND Source="Service Control Manager" AND "Mobile Broadband" in Message)