CVE-2024-29998
📋 TL;DR
This vulnerability in the Windows Mobile Broadband Driver allows an attacker to execute arbitrary code remotely by sending specially crafted packets to an affected system. It affects Windows devices with mobile broadband hardware or drivers installed. Successful exploitation could lead to complete system compromise.
💻 Affected Systems
- Windows Mobile Broadband Driver
📦 What is this software?
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
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining SYSTEM privileges, installing malware, stealing data, and establishing persistence on the device.
Likely Case
Local privilege escalation or remote code execution on vulnerable systems, potentially leading to credential theft, lateral movement, or ransomware deployment.
If Mitigated
Limited impact due to network segmentation, proper patching, and restricted mobile broadband usage in enterprise environments.
🎯 Exploit Status
Exploitation requires sending specially crafted packets to the vulnerable driver. No public exploit code available at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: April 2024 security updates (specific KB numbers vary by Windows version)
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-29998
Restart Required: Yes
Instructions:
1. Apply April 2024 Windows security updates via Windows Update. 2. For enterprise: Deploy through WSUS, Microsoft Endpoint Configuration Manager, or Microsoft Intune. 3. Verify installation via winver or systeminfo command.
🔧 Temporary Workarounds
Disable Mobile Broadband Interface
windowsDisable the mobile broadband network adapter if not required for system functionality.
netsh mbn set profile name="*" connectionmode=manual
Disable via Device Manager: Network adapters > Mobile Broadband Adapter
Network Segmentation
allSegment mobile broadband devices from critical network resources using firewall rules.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate systems with mobile broadband capabilities
- Deploy endpoint detection and response (EDR) solutions to monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check if mobile broadband driver is installed via Device Manager or 'netsh mbn show interfaces' command. Systems with the driver present before April 2024 patches are vulnerable.Check Version:
systeminfo | findstr /B /C:"OS Name" /C:"OS Version"Verify Fix Applied:
Verify April 2024 security updates are installed via 'systeminfo | findstr /B /C:"KB"' or check Windows Update history.📡 Detection & Monitoring
Log Indicators:
- Event ID 1 from Windows Mobile Broadband Service with unusual process creation
- Driver crash events in System logs
- Unexpected network connections from mobile broadband interfaces
Network Indicators:
- Unusual traffic patterns to/from mobile broadband interfaces
- Suspicious packets targeting mobile broadband ports
SIEM Query:
EventID=1 AND (Image="*mbn*" OR CommandLine="*mbn*") | Process creation from mobile broadband components