CVE-2025-11666
📋 TL;DR
This vulnerability in Tenda RP3 Pro routers allows local attackers to exploit a hard-coded password in the firmware update mechanism. Attackers with physical or local network access can potentially gain unauthorized control of the device. Only Tenda RP3 Pro routers running affected firmware versions are impacted.
💻 Affected Systems
- Tenda RP3 Pro
⚠️ 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 firmware modification, persistent backdoor installation, and network traffic interception
Likely Case
Unauthorized firmware modification leading to device instability or limited control by attackers with local access
If Mitigated
Minimal impact if devices are physically secured and network access is restricted
🎯 Exploit Status
Exploit details published on GitHub; requires local access to execute
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 22.5.7.93
Vendor Advisory: https://www.tenda.com.cn/
Restart Required: Yes
Instructions:
1. Visit Tenda support website 2. Download latest firmware for RP3 Pro 3. Upload via router admin interface 4. Reboot device
🔧 Temporary Workarounds
Restrict physical and network access
allPrevent unauthorized local access to router
Disable unnecessary services
allReduce attack surface by disabling unused router features
🧯 If You Can't Patch
- Physically secure router in locked location
- Implement network segmentation to isolate router management interface
- Monitor for unauthorized firmware update attempts
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface; if version is 22.5.7.93 or earlier, device is vulnerableCheck Version:
Login to router admin interface and check firmware version in System StatusVerify Fix Applied:
Verify firmware version is newer than 22.5.7.93 after update📡 Detection & Monitoring
Log Indicators:
- Unauthorized firmware update attempts
- Unexpected force_upgrade.sh execution
Network Indicators:
- Unexpected firmware download traffic
- Unusual router management interface access
SIEM Query:
Search for 'force_upgrade.sh' or 'current_force_upgrade_pwd' in router logs