CVE-2025-12274
📋 TL;DR
A buffer overflow vulnerability in Tenda CH22 router firmware version 1.0.0.1 allows remote attackers to execute arbitrary code by manipulating the 'page' parameter in the fromP2pListFilter function. This affects all users running the vulnerable firmware on Tenda CH22 routers. The vulnerability is remotely exploitable without authentication.
💻 Affected Systems
- Tenda CH22
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete router compromise, credential theft, network traffic interception, and lateral movement into connected devices.
Likely Case
Router compromise allowing attackers to change DNS settings, intercept traffic, or use the router as a pivot point for further attacks.
If Mitigated
Limited impact if network segmentation isolates the router and external access is restricted.
🎯 Exploit Status
Public exploit code is available, making this easily weaponizable by attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.tenda.com.cn/
Restart Required: Yes
Instructions:
1. Check Tenda website for firmware updates. 2. Download latest firmware. 3. Access router admin interface. 4. Navigate to firmware upgrade section. 5. Upload and apply new firmware. 6. Reboot router.
🔧 Temporary Workarounds
Disable remote administration
allPrevent external access to router administration interface
Network segmentation
allIsolate router management interface from general network traffic
🧯 If You Can't Patch
- Replace affected Tenda CH22 routers with different models or brands
- Implement strict firewall rules blocking all external access to router management interface
🔍 How to Verify
Check if Vulnerable:
Access router admin interface and check firmware version in system settings. If version is 1.0.0.1, device is vulnerable.Check Version:
curl -s http://router-ip/goform/getStatus | grep versionVerify Fix Applied:
After firmware update, verify version number is no longer 1.0.0.1 and test if /goform/P2pListFilter endpoint still responds.📡 Detection & Monitoring
Log Indicators:
- Multiple POST requests to /goform/P2pListFilter with large 'page' parameter values
- Unusual process execution or memory errors in router logs
Network Indicators:
- External IP addresses accessing router management interface
- Unusual traffic patterns from router to external hosts
SIEM Query:
source="router_logs" AND (uri="/goform/P2pListFilter" OR process="buffer overflow")