CVE-2024-43543
📋 TL;DR
This vulnerability in the Windows Mobile Broadband Driver allows remote attackers to execute arbitrary code on affected systems. Attackers could exploit this by sending specially crafted packets to vulnerable systems, potentially gaining SYSTEM-level privileges. 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
Remote attacker gains SYSTEM privileges and full control of the system, enabling data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Attacker executes code with elevated privileges, potentially installing malware, stealing credentials, or moving laterally within the network.
If Mitigated
Attack fails due to network segmentation, lack of mobile broadband usage, or proper patch deployment.
🎯 Exploit Status
Exploitation requires network access to the vulnerable system. No public exploit code available 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-2024-43543
Restart Required: Yes
Instructions:
1. Apply latest Windows security updates from Microsoft
2. Restart affected systems
3. Verify patch installation via Windows Update history
🔧 Temporary Workarounds
Disable Mobile Broadband Interface
windowsDisable mobile broadband functionality if not required
Disable via Device Manager or PowerShell: Disable-PnpDevice -InstanceId 'Mobile Broadband Device ID'
Network Segmentation
allRestrict network access to systems with mobile broadband interfaces
🧯 If You Can't Patch
- Segment affected systems from untrusted networks
- Implement strict network filtering for mobile broadband traffic
🔍 How to Verify
Check if Vulnerable:
Check Windows Update history for missing security patches related to CVE-2024-43543Check Version:
wmic qfe list | findstr KBVerify Fix Applied:
Verify KB patch number from Microsoft advisory is installed via 'wmic qfe list' or Windows Update history📡 Detection & Monitoring
Log Indicators:
- Unexpected driver crashes in Event Viewer
- Suspicious network connections to mobile broadband interfaces
- Unusual process creation from driver-related processes
Network Indicators:
- Unusual traffic to/from mobile broadband interfaces
- Suspicious packets targeting mobile broadband ports
SIEM Query:
EventID=1000 OR EventID=1001 AND Source contains 'Mobile Broadband'