CVE-2025-27811
📋 TL;DR
This vulnerability allows a local attacker with limited privileges to escalate to SYSTEM-level privileges through a vulnerable COM interface in Razer Synapse's elevation service. It affects users running Razer Synapse 4 software on Windows systems. Attackers can gain full control of the system by exploiting this local privilege escalation flaw.
💻 Affected Systems
- Razer Synapse 4
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise where an attacker gains SYSTEM privileges, enabling installation of malware, credential theft, persistence mechanisms, and full control over the affected machine.
Likely Case
Local attackers with limited access (standard user accounts) escalate to administrative/SYSTEM privileges to bypass security controls, install unauthorized software, or access protected system resources.
If Mitigated
With proper privilege separation and endpoint protection, impact is limited to the local machine only, preventing lateral movement or network-wide compromise.
🎯 Exploit Status
Proof-of-concept code is publicly available in the referenced GitHub gist. Exploitation requires local access but is relatively straightforward once the attacker has a foothold on the system.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
1. Check Razer's official security advisories for updates. 2. Update Razer Synapse 4 to the latest version when available. 3. Monitor Razer's support channels for patch announcements.
🔧 Temporary Workarounds
Disable Razer Synapse Service
windowsStop and disable the vulnerable razer_elevation_service.exe service to prevent exploitation
sc stop "Razer Synapse Service"
sc config "Razer Synapse Service" start= disabled
Remove Razer Synapse Software
windowsUninstall Razer Synapse 4 completely if not required for essential functionality
appwiz.cpl
Select "Razer Synapse" and click Uninstall
🧯 If You Can't Patch
- Implement strict endpoint privilege management to limit standard user capabilities
- Monitor for suspicious process creation events related to razer_elevation_service.exe
🔍 How to Verify
Check if Vulnerable:
Check Razer Synapse version in Settings > About. If version is 4.0.86.2502180127 or earlier, the system is vulnerable.Check Version:
wmic product where "name like 'Razer Synapse%'" get versionVerify Fix Applied:
Verify Razer Synapse version is updated beyond 4.0.86.2502180127 when a patch becomes available.📡 Detection & Monitoring
Log Indicators:
- Unusual process creation from razer_elevation_service.exe
- Suspicious COM object activation events
- Privilege escalation attempts in Windows Security logs
Network Indicators:
- None - this is a local privilege escalation with no network component
SIEM Query:
Process Creation where (Image contains 'razer_elevation_service.exe' AND ParentImage contains 'cmd.exe' OR ParentImage contains 'powershell.exe')