CVE-2025-3719
📋 TL;DR
An access control vulnerability in CLI functionality allows authenticated users with limited privileges to execute administrative commands. This enables unauthorized configuration changes and potential service disruption. Affected systems are those running vulnerable versions of the software with CLI access enabled.
💻 Affected Systems
- Nozomi Networks Guardian/CMC
📦 What is this software?
Cmc by Nozominetworks
Guardian by Nozominetworks
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through administrative command execution leading to data exfiltration, service disruption, or persistent backdoor installation.
Likely Case
Unauthorized configuration changes causing service disruption, data integrity issues, or privilege escalation to full administrative access.
If Mitigated
Limited impact through proper access controls, monitoring, and network segmentation preventing exploitation attempts.
🎯 Exploit Status
Requires authenticated access but simple command execution once authenticated
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched versions
Vendor Advisory: https://security.nozominetworks.com/NN-2025:5-01
Restart Required: Yes
Instructions:
1. Review vendor advisory for affected versions. 2. Apply recommended patches/updates. 3. Restart affected services/systems. 4. Verify fix implementation.
🔧 Temporary Workarounds
Restrict CLI Access
allLimit CLI access to trusted administrative users only
# Configure access controls per system documentation
# Example: Restrict SSH/CLI access to specific IPs/users
Monitor CLI Activity
allImplement logging and alerting for CLI command execution
# Enable audit logging for CLI commands
# Configure alerts for unusual CLI activity
🧯 If You Can't Patch
- Implement strict network segmentation to isolate affected systems
- Enforce least privilege access controls and monitor all CLI activity
🔍 How to Verify
Check if Vulnerable:
Check system version against vendor advisory; test if limited privilege users can execute administrative CLI commandsCheck Version:
# Check Nozomi Networks version via CLI or web interfaceVerify Fix Applied:
Verify updated version; test that limited privilege users cannot execute administrative CLI commands📡 Detection & Monitoring
Log Indicators:
- Unusual CLI command execution by non-admin users
- Failed privilege escalation attempts
- Configuration changes from unexpected sources
Network Indicators:
- Unexpected CLI/SSH connections to management interfaces
- Anomalous traffic patterns following CLI access
SIEM Query:
source="cli_logs" AND (user.privilege="low" AND command="admin_*") OR (user.role!="admin" AND command IN ("configure", "system", "network"))