CVE-2025-9869
📋 TL;DR
This vulnerability in Razer Synapse 3 allows local attackers to escalate privileges by exploiting a symbolic link issue in the Razer Synapse Service. Attackers with initial low-privileged access can delete arbitrary files and execute code as SYSTEM. Users of Razer Synapse 3 on Windows systems are affected.
💻 Affected Systems
- Razer Synapse 3
📦 What is this software?
Synapse by Razer
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with SYSTEM privileges, allowing attackers to install malware, steal credentials, disable security controls, and maintain persistent access.
Likely Case
Local privilege escalation enabling attackers to bypass security restrictions, install additional malicious software, and access sensitive system resources.
If Mitigated
Limited impact if proper endpoint protection, least privilege principles, and application control are implemented, though the vulnerability still exists.
🎯 Exploit Status
Exploitation requires local access and ability to create symbolic links; ZDI has confirmed the vulnerability but no public exploit is available
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Razer Synapse 3 updates for latest version
Vendor Advisory: https://www.razer.com/support
Restart Required: Yes
Instructions:
1. Open Razer Synapse 3
2. Check for updates in settings
3. Install any available updates
4. Restart the system
🔧 Temporary Workarounds
Disable Razer Synapse Service
windowsTemporarily disable the vulnerable service to prevent exploitation
sc stop "Razer Synapse Service"
sc config "Razer Synapse Service" start= disabled
Remove Razer Synapse 3
windowsUninstall the software if not required
appwiz.cpl
🧯 If You Can't Patch
- Implement strict least privilege policies to limit initial low-privileged access
- Use application control solutions to block unauthorized process execution
🔍 How to Verify
Check if Vulnerable:
Check Razer Synapse 3 version and compare with latest patched version from Razer's websiteCheck Version:
Check Razer Synapse 3 about/settings section for version informationVerify Fix Applied:
Verify Razer Synapse 3 is updated to latest version and service is running patched binaries📡 Detection & Monitoring
Log Indicators:
- Unusual symbolic link creation events
- Razer Synapse Service accessing unexpected file paths
- Privilege escalation attempts
Network Indicators:
- None - this is a local privilege escalation vulnerability
SIEM Query:
EventID 4688 with process name containing 'Razer' AND target process name containing privileged system processes