CVE-2022-32054
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on Tenda AC10 routers by exploiting improper input validation in the lanIp parameter. Attackers can gain full control of affected devices without authentication. All users running vulnerable firmware versions are affected.
💻 Affected Systems
- Tenda AC10
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attackers to install persistent malware, intercept network traffic, pivot to internal networks, or join botnets.
Likely Case
Router takeover leading to DNS hijacking, credential theft, network surveillance, or denial of service.
If Mitigated
Limited impact if devices are behind firewalls with strict inbound filtering and network segmentation.
🎯 Exploit Status
Public exploit code exists in GitHub repositories. Exploitation requires sending crafted HTTP requests to the router's web interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Tenda website for latest firmware > V15.03.06.26
Vendor Advisory: Not publicly documented by vendor
Restart Required: Yes
Instructions:
1. Visit Tenda support website. 2. Download latest firmware for AC10 model. 3. Log into router admin interface. 4. Navigate to System Tools > Firmware Upgrade. 5. Upload and install new firmware. 6. Reboot router.
🔧 Temporary Workarounds
Disable remote management
allPrevent external access to router web interface
Login to router > Advanced > System Tools > Remote Management > Disable
Network segmentation
allIsolate router management interface from untrusted networks
Configure firewall rules to block WAN access to router ports 80/443
🧯 If You Can't Patch
- Place router behind dedicated firewall with strict inbound rules
- Implement network monitoring for suspicious HTTP requests to router IP
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router admin interface under System Status or System ToolsCheck Version:
curl -s http://router-ip/goform/getStatus | grep versionVerify Fix Applied:
Confirm firmware version is newer than V15.03.06.26 and test with known exploit scripts📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP POST requests to /goform/setLanCfg containing shell metacharacters
- Failed login attempts followed by successful exploitation
Network Indicators:
- HTTP requests with shell commands in lanIp parameter
- Unexpected outbound connections from router
SIEM Query:
source="router.log" AND ("lanIp=" AND ("|" OR ";" OR "`" OR "$"))