CVE-2025-70328
📋 TL;DR
This CVE describes an OS command injection vulnerability in TOTOLINK X6000R routers. Authenticated attackers can execute arbitrary shell commands by exploiting insufficient input validation in the NTPSyncWithHost handler. Only users of the specific router model and firmware version are affected.
💻 Affected Systems
- TOTOLINK X6000R
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full router compromise allowing attacker to install persistent backdoors, intercept all network traffic, pivot to internal networks, and brick the device.
Likely Case
Attacker gains shell access with router privileges, enabling network reconnaissance, traffic interception, and potential lateral movement to connected devices.
If Mitigated
With proper network segmentation and authentication controls, impact limited to router compromise without lateral movement.
🎯 Exploit Status
Exploit requires authentication but command injection is straightforward once authenticated. Public GitHub repository contains technical details.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
1. Check TOTOLINK website for firmware updates
2. If update available, download and flash via web interface
3. Verify version after update
4. No official patch confirmed at this time
🔧 Temporary Workarounds
Disable vulnerable handler
linuxRemove or disable the NTPSyncWithHost functionality if not required
# Requires custom firmware modification
# Not recommended for production without testing
Network segmentation
allIsolate router management interface from untrusted networks
🧯 If You Can't Patch
- Restrict router management interface to trusted IP addresses only
- Implement strong authentication and change default credentials
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via web interface or SSH if enabled. Version v9.4.0cu.1498_B20250826 is vulnerable.Check Version:
cat /etc/version or check web interface System Status pageVerify Fix Applied:
Verify firmware version has changed from vulnerable version. No official patch available for verification.📡 Detection & Monitoring
Log Indicators:
- Unusual date command executions
- Suspicious shell commands in system logs
- Multiple failed authentication attempts followed by successful login
Network Indicators:
- Unusual outbound connections from router
- Traffic to unexpected destinations
- Port scans originating from router
SIEM Query:
source="router_logs" AND (command="date -s" AND arguments CONTAINS ";" OR "|" OR "&")