CVE-2025-60694
📋 TL;DR
A stack-based buffer overflow vulnerability in Linksys E1200 v2 routers allows remote attackers to execute arbitrary code or cause denial of service without authentication. Attackers can exploit this by sending specially crafted HTTP requests to the router's web interface. This affects all users of Linksys E1200 v2 routers running vulnerable firmware.
💻 Affected Systems
- Linksys E1200 v2
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete router compromise, credential theft, network traffic interception, and persistent backdoor installation.
Likely Case
Router crash causing denial of service, requiring physical reset and disrupting network connectivity.
If Mitigated
Limited impact if router is behind firewall with restricted web interface access, though still vulnerable to internal threats.
🎯 Exploit Status
Exploit details are publicly available on GitHub, making weaponization straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.linksys.com/
Restart Required: Yes
Instructions:
1. Check Linksys website for firmware updates. 2. Download latest firmware for E1200 v2. 3. Log into router web interface. 4. Navigate to firmware update section. 5. Upload and install new firmware. 6. Reboot router.
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to router web interface
Restrict Web Interface Access
linuxUse firewall rules to limit access to router management interface
iptables -A INPUT -p tcp --dport 80 -s 192.168.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
🧯 If You Can't Patch
- Replace router with supported model
- Place router behind dedicated firewall with strict inbound rules
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router web interface under Administration > Firmware UpgradeCheck Version:
curl -s http://router-ip/status.cgi | grep firmwareVerify Fix Applied:
Verify firmware version is newer than E1200_v2.0.11.001_us📡 Detection & Monitoring
Log Indicators:
- HTTP requests with unusual CGI parameters (route_ipaddr_, route_netmask_, route_gateway_)
- Router crash/reboot events in system logs
Network Indicators:
- HTTP POST requests to router IP with buffer overflow patterns in parameters
- Unusual outbound connections from router after exploitation
SIEM Query:
source="router.log" AND ("route_ipaddr_" OR "route_netmask_" OR "route_gateway_")