CVE-2024-37976
📋 TL;DR
This vulnerability allows attackers to bypass security features in Windows Resume Extensible Firmware Interface (Resume EFI) during system resume operations. It affects Windows systems with Resume EFI enabled, potentially allowing local attackers to execute arbitrary code or bypass security controls. The vulnerability requires local access to the system.
💻 Affected Systems
- Microsoft Windows
📦 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 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
Windows 11 24h2 by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
Local attacker gains SYSTEM-level privileges, bypasses security features like Secure Boot, and installs persistent malware or rootkits.
Likely Case
Local attacker with limited privileges escalates to higher privileges, bypasses security controls, or gains unauthorized access to protected system areas.
If Mitigated
Attack is prevented through proper patch management, local access controls, and security monitoring.
🎯 Exploit Status
Requires local access and knowledge of Resume EFI internals. No public exploits available as of analysis.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: July 2024 security updates (KB5040442 for Windows 11, KB5040437 for Windows 10, etc.)
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-37976
Restart Required: Yes
Instructions:
1. Open Windows Update Settings. 2. Click 'Check for updates'. 3. Install July 2024 security updates. 4. Restart system when prompted.
🔧 Temporary Workarounds
Disable Resume EFI
windowsDisable the Resume Extensible Firmware Interface feature in BIOS/UEFI settings
Enable Secure Boot
windowsEnsure Secure Boot is enabled and properly configured to validate firmware components
🧯 If You Can't Patch
- Restrict physical and local administrative access to vulnerable systems
- Implement strict access controls and monitor for suspicious local privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check Windows Update history for July 2024 security updates. If not installed, system is vulnerable.Check Version:
systeminfo | findstr /B /C:"OS Name" /C:"OS Version"Verify Fix Applied:
Verify July 2024 security updates are installed via Windows Update history or 'systeminfo' command showing appropriate KB numbers.📡 Detection & Monitoring
Log Indicators:
- Unexpected system resume events
- Suspicious firmware modification attempts
- Security feature bypass logs in Windows Event Viewer
Network Indicators:
- Not network exploitable - focus on local system monitoring
SIEM Query:
EventID=1 OR EventID=4688 where ProcessName contains 'resume' OR CommandLine contains 'resume' AND suspicious parameters