CVE-2026-26369
📋 TL;DR
CVE-2026-26369 is a privilege escalation vulnerability in eNet SMART HOME server where low-privileged users can elevate themselves to administrative privileges by exploiting insufficient authorization checks in the setUserGroup JSON-RPC method. This affects all users of eNet SMART HOME server versions 2.2.1 and 2.3.1, allowing attackers to gain full control over smart home systems.
💻 Affected Systems
- eNet SMART HOME server
📦 What is this software?
Enet Smart Home by Jung Group
Enet Smart Home by Jung Group
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of smart home system allowing attacker to modify device configurations, disable security features, access sensitive data, and potentially pivot to other network systems.
Likely Case
Unauthorized administrative access leading to privacy violations, device manipulation, and potential physical security risks in smart home environments.
If Mitigated
Limited impact if proper network segmentation and access controls prevent low-privileged user access to the vulnerable endpoint.
🎯 Exploit Status
Exploitation requires authenticated access as a low-privileged user. The exploit involves sending a crafted POST request to /jsonrpc/management with specific JSON-RPC parameters.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
No official patch available. Monitor vendor channels for updates. Consider workarounds or alternative solutions.
🔧 Temporary Workarounds
Network Access Restriction
linuxRestrict access to the /jsonrpc/management endpoint to only trusted administrative users or systems.
iptables -A INPUT -p tcp --dport [SERVER_PORT] -s [TRUSTED_IP] -j ACCEPT
iptables -A INPUT -p tcp --dport [SERVER_PORT] -j DROP
Web Server Configuration
allConfigure web server (Apache/Nginx) to block or restrict access to the vulnerable endpoint.
# Apache: <Location "/jsonrpc/management">
Require ip [TRUSTED_NETWORK]
</Location>
# Nginx: location /jsonrpc/management {
allow [TRUSTED_NETWORK];
deny all;
}
🧯 If You Can't Patch
- Implement strict network segmentation to isolate the smart home server from general user networks
- Disable or remove low-privileged user accounts that have access to the JSON-RPC interface
🔍 How to Verify
Check if Vulnerable:
Test by attempting to send a crafted POST request to /jsonrpc/management endpoint as a low-privileged user with parameters to modify user group to UG_ADMIN.Check Version:
Check server documentation or web interface for version information. Command varies by installation method.Verify Fix Applied:
After applying workarounds, verify that low-privileged users cannot access /jsonrpc/management endpoint or that setUserGroup requests are properly authorized.📡 Detection & Monitoring
Log Indicators:
- POST requests to /jsonrpc/management from non-admin users
- setUserGroup method calls with UG_ADMIN parameter
- User privilege changes in authentication logs
Network Indicators:
- HTTP POST traffic to /jsonrpc/management endpoint containing setUserGroup method
- JSON-RPC requests with user group modification parameters
SIEM Query:
http.method:POST AND http.uri:"/jsonrpc/management" AND (json.method:"setUserGroup" OR json.params.group:"UG_ADMIN")