CVE-2025-60938
📋 TL;DR
CVE-2025-60938 is a remote code execution vulnerability in Emoncms 11.7.3 that allows authenticated users to execute arbitrary commands on the target system through the firmware upload feature. This affects all systems running the vulnerable version of Emoncms with the admin upload functionality enabled.
💻 Affected Systems
- Emoncms
📦 What is this software?
Emoncms by Openenergymonitor
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attacker to execute arbitrary commands with web server privileges, potentially leading to data theft, system takeover, or lateral movement.
Likely Case
Authenticated attackers gaining shell access to the server, installing backdoors, modifying data, or disrupting monitoring operations.
If Mitigated
Limited impact if proper authentication controls and input validation are in place, though risk remains for authorized but malicious users.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward once authentication is bypassed or obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check GitHub issue for latest patched version
Vendor Advisory: https://github.com/emoncms/emoncms/issues/1941
Restart Required: Yes
Instructions:
1. Check the GitHub issue for the latest patched version
2. Update Emoncms to the latest version
3. Restart the web server service
4. Verify the fix is applied
🔧 Temporary Workarounds
Disable firmware upload endpoint
allTemporarily disable the vulnerable /admin/upload-custom-firmware endpoint
# Modify web server configuration to block access to /admin/upload-custom-firmware
# For Apache: add LocationMatch directive
# For Nginx: add location block to deny access
Restrict admin access
allImplement strict access controls to limit who can access admin functions
# Configure firewall rules to restrict admin interface access
# Implement IP whitelisting for admin functions
# Use strong authentication and MFA for admin accounts
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Emoncms from critical systems
- Deploy web application firewall with RCE protection rules
🔍 How to Verify
Check if Vulnerable:
Check if running Emoncms version 11.7.3 and if /admin/upload-custom-firmware endpoint is accessibleCheck Version:
Check Emoncms version in web interface or configuration filesVerify Fix Applied:
Verify Emoncms has been updated to a version after 11.7.3 and test the upload functionality with malicious inputs📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /admin/upload-custom-firmware
- Suspicious file uploads with unusual parameters
- System command execution from web server process
Network Indicators:
- Unusual outbound connections from web server
- Traffic patterns indicating command and control
SIEM Query:
source="web_server_logs" AND (uri="/admin/upload-custom-firmware" AND (method="POST" OR suspicious_parameters))