CVE-2024-49079
📋 TL;DR
This vulnerability allows attackers to execute arbitrary code remotely through Input Method Editor (IME) components. It affects systems with vulnerable IME implementations, potentially compromising user sessions and system integrity. Users of affected software versions are at risk.
💻 Affected Systems
- Microsoft Windows Input Method Editor components
📦 What is this software?
Windows 10 1507 by Microsoft
Windows 10 1507 by Microsoft
Windows 10 1607 by Microsoft
Windows 10 1607 by Microsoft
Windows 10 1809 by Microsoft
Windows 10 1809 by Microsoft
Windows 10 21h2 by Microsoft
Windows 10 22h2 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 full control, data exfiltration, and lateral movement across the network.
Likely Case
Local privilege escalation leading to unauthorized access to sensitive data and system resources.
If Mitigated
Limited impact with proper access controls and network segmentation preventing lateral movement.
🎯 Exploit Status
Exploitation requires specific conditions and user interaction; no public exploits confirmed
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Microsoft Security Update for specific patch version
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49079
Restart Required: Yes
Instructions:
1. Open Windows Update settings
2. Check for updates
3. Install all security updates
4. Restart system when prompted
🔧 Temporary Workarounds
Disable vulnerable IME components
windowsTemporarily disable or remove affected Input Method Editors
Control Panel > Language > Advanced settings > Change language bar hot keys
Restrict IME privileges
windowsApply least privilege principles to IME processes
Use Group Policy to restrict IME execution permissions
🧯 If You Can't Patch
- Implement application whitelisting to prevent unauthorized IME execution
- Enable enhanced monitoring and logging for IME-related activities
🔍 How to Verify
Check if Vulnerable:
Check Windows Update history for missing security patches related to CVE-2024-49079Check Version:
wmic os get caption, version, buildnumberVerify Fix Applied:
Verify patch installation in Windows Update history and check system is no longer vulnerable using vulnerability scanners📡 Detection & Monitoring
Log Indicators:
- Unusual IME process creation
- Suspicious memory allocation in IME processes
- Failed IME component loading attempts
Network Indicators:
- Unexpected outbound connections from IME processes
- Anomalous network traffic patterns during IME usage
SIEM Query:
Process Creation where (Image contains 'ime' OR CommandLine contains 'ime') AND (ParentImage != 'explorer.exe')