CVE-2025-12622
📋 TL;DR
A buffer overflow vulnerability in Tenda AC10 routers allows remote attackers to execute arbitrary code by manipulating the 'getui' parameter in the formSysRunCmd function. This affects Tenda AC10 routers running firmware version 16.03.10.13. The vulnerability is remotely exploitable and has been publicly disclosed.
💻 Affected Systems
- Tenda AC10
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, network infiltration, and potential lateral movement to other systems.
Likely Case
Remote code execution allowing attacker to gain control of the router, intercept/modify network traffic, or use as pivot point for further attacks.
If Mitigated
Limited impact if device is behind firewall with restricted WAN access and proper network segmentation.
🎯 Exploit Status
Exploit details have been publicly disclosed and are available in the referenced links.
🛠️ 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 for AC10. 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
allPlace router in isolated network segment to limit attack surface
🧯 If You Can't Patch
- Replace affected router with different model/vendor
- Implement strict firewall rules to block all WAN access to router management interface
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface. If version is exactly 16.03.10.13, device is vulnerable.Check Version:
Check via router web interface or SSH if available: cat /proc/version or show version commandsVerify Fix Applied:
Verify firmware version has changed from 16.03.10.13 after update.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/SysRunCmd
- Buffer overflow errors in system logs
- Unexpected process execution
Network Indicators:
- Exploit traffic patterns to router management interface
- Unusual outbound connections from router
SIEM Query:
source="router_logs" AND (url="/goform/SysRunCmd" OR message="*buffer overflow*")