CVE-2025-28200
📋 TL;DR
The Victure RX1800 router uses a weak default password derived from the last 8 digits of its MAC address, allowing attackers to easily guess credentials and gain administrative access. This affects all users of Victure RX1800 EN_V1.0.0_r12_110933 who haven't changed the default password. Attackers can take full control of the router and potentially compromise connected devices.
💻 Affected Systems
- Victure RX1800
📦 What is this software?
Rx1800 Firmware by Govicture
⚠️ Risk & Real-World Impact
Worst Case
Full router compromise leading to man-in-the-middle attacks, network traffic interception, malware distribution to connected devices, and persistent backdoor installation.
Likely Case
Unauthorized administrative access to router settings, DNS hijacking, network monitoring, and credential theft from connected devices.
If Mitigated
Limited impact if strong unique password is set and remote administration is disabled.
🎯 Exploit Status
Exploitation requires only MAC address discovery and password calculation. No authentication needed for initial access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None provided
Restart Required: No
Instructions:
No official patch available. Contact Victure support for firmware updates.
🔧 Temporary Workarounds
Change Default Password
allImmediately change the router's administrative password to a strong, unique password.
Login to router admin panel > System > Password > Set new strong password
Disable Remote Administration
allPrevent external access to router administration interface.
Login to router admin panel > System > Remote Management > Disable
🧯 If You Can't Patch
- Isolate router on separate network segment with strict firewall rules
- Implement network monitoring for unauthorized access attempts to router admin interface
🔍 How to Verify
Check if Vulnerable:
Check if router uses default password. Attempt login using last 8 digits of MAC address as password.Check Version:
Login to router admin panel > System > Firmware VersionVerify Fix Applied:
Verify new strong password is required for admin access and cannot be guessed from MAC address.📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts followed by successful admin login
- Unusual admin access from unfamiliar IP addresses
Network Indicators:
- Unexpected traffic to router admin port (typically 80/443)
- DNS configuration changes without authorization
SIEM Query:
source="router" AND (event="login_success" OR event="config_change")