CVE-2025-52377
📋 TL;DR
This command injection vulnerability in Nexxt Solutions NCM-X1800 Mesh Router allows authenticated attackers to execute arbitrary commands as root via the web management interface. Attackers can exploit the ping/traceroute functionality to gain full control of affected devices. Only users of NCM-X1800 routers with vulnerable firmware versions are affected.
💻 Affected Systems
- Nexxt Solutions NCM-X1800 Mesh Router
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attackers to install persistent backdoors, intercept network traffic, pivot to internal networks, or use device in botnets.
Likely Case
Attackers gain root shell access to modify device configuration, steal credentials, or disrupt network services.
If Mitigated
Limited impact if proper network segmentation and authentication controls prevent unauthorized access to management interface.
🎯 Exploit Status
Public exploit code available on GitHub. Requires authentication but default credentials may be used.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: Yes
Instructions:
1. Check vendor website for firmware updates. 2. Download latest firmware. 3. Access router web interface. 4. Navigate to firmware update section. 5. Upload and apply update. 6. Reboot device.
🔧 Temporary Workarounds
Disable Web Management Interface
linuxDisable the vulnerable web interface and use alternative management methods
# Access router CLI via SSH/Telnet
# Disable web service: service httpd stop
# Prevent auto-start: update-rc.d httpd disable
Restrict Management Access
linuxLimit web interface access to specific trusted IP addresses only
# Add iptables rule: iptables -A INPUT -p tcp --dport 80 -s TRUSTED_IP -j ACCEPT
# Block all others: iptables -A INPUT -p tcp --dport 80 -j DROP
🧯 If You Can't Patch
- Isolate affected routers in separate VLAN with strict firewall rules
- Change default credentials and implement strong authentication
🔍 How to Verify
Check if Vulnerable:
Check firmware version in web interface: System > Status > Firmware Version. If version is UV1.2.7 or lower, device is vulnerable.Check Version:
curl -s http://router-ip/status.cgi | grep -i firmwareVerify Fix Applied:
Verify firmware version is above UV1.2.7. Test ping functionality with command injection payloads to confirm sanitization.📡 Detection & Monitoring
Log Indicators:
- Unusual ping/traceroute requests with shell metacharacters
- Multiple failed authentication attempts followed by successful login
- Commands like ';', '|', '&', '`' in web access logs
Network Indicators:
- Unusual outbound connections from router
- Traffic to known malicious IPs
- Unexpected SSH/Telnet sessions originating from router
SIEM Query:
source="router-logs" AND ("um_ping_set.cgi" AND ("|" OR ";" OR "&" OR "`"))