CVE-2025-54114
📋 TL;DR
A race condition vulnerability in Windows Connected Devices Platform Service allows authenticated attackers to escalate privileges locally. This affects Windows systems where an attacker already has some level of access and can exploit improper synchronization in shared resources. The vulnerability enables local privilege escalation from a lower-privileged account to higher system privileges.
💻 Affected Systems
- Windows Connected Devices Platform Service
📦 What is this software?
Windows 10 1607 by Microsoft
Windows 10 1607 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 where an attacker gains SYSTEM-level privileges, enabling installation of persistent malware, credential theft, and full control over the affected system.
Likely Case
Local privilege escalation allowing attackers to bypass security controls, access sensitive data, and perform administrative actions on the compromised system.
If Mitigated
Limited impact if proper access controls, least privilege principles, and endpoint protection are in place, though the vulnerability still presents a security risk.
🎯 Exploit Status
Exploitation requires authenticated access and race condition timing, making it moderately complex but feasible for skilled attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Microsoft's monthly security updates for the specific KB number addressing CVE-2025-54114
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54114
Restart Required: Yes
Instructions:
1. Open Windows Update settings
2. Check for updates
3. Install all available security updates
4. Restart the system when prompted
🔧 Temporary Workarounds
Disable Connected Devices Platform Service
windowsDisables the vulnerable service to prevent exploitation
sc config CDPSvc start= disabled
sc stop CDPSvc
🧯 If You Can't Patch
- Implement strict access controls and least privilege principles to limit potential damage from privilege escalation
- Deploy endpoint detection and response (EDR) solutions to detect suspicious privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check if the Connected Devices Platform Service (CDPSvc) is running and verify Windows version against affected versions in Microsoft's advisoryCheck Version:
systeminfo | findstr /B /C:"OS Name" /C:"OS Version"Verify Fix Applied:
Verify that the latest Windows security updates are installed and check that the service version has been updated📡 Detection & Monitoring
Log Indicators:
- Unexpected service starts/stops of CDPSvc
- Privilege escalation events in Windows Security logs
- Suspicious process creation with elevated privileges
Network Indicators:
- Not applicable - this is a local privilege escalation vulnerability
SIEM Query:
EventID=4688 AND NewProcessName CONTAINS "*" AND SubjectUserName != SYSTEM AND TokenElevationType != %%1936