CVE-2025-54401
📋 TL;DR
Multiple stack-based buffer overflow vulnerabilities in Planet WGR-500 routers allow remote code execution via specially crafted HTTP requests. Attackers can exploit these vulnerabilities by manipulating the 'submit-url' parameter in the formPingCmd functionality. Organizations using Planet WGR-500 routers with vulnerable firmware are affected.
💻 Affected Systems
- Planet WGR-500
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise allowing attacker to execute arbitrary code with router privileges, potentially establishing persistent access, intercepting network traffic, or launching attacks against internal networks.
Likely Case
Remote code execution leading to router compromise, network traffic interception, and potential lateral movement to connected devices.
If Mitigated
Denial of service or limited impact if proper network segmentation and access controls prevent exploitation attempts.
🎯 Exploit Status
Exploitation requires sending crafted HTTP requests to the vulnerable endpoint. No authentication is required based on the CVE description.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Monitor Planet vendor website for security advisories
2. Apply firmware updates when available
3. Restart router after firmware update
🔧 Temporary Workarounds
Disable web management interface
allDisable the web management interface if not required for operations
Restrict web interface access
allConfigure firewall rules to restrict access to the web management interface
🧯 If You Can't Patch
- Segment affected routers in isolated network zones
- Implement strict network access controls to limit exposure
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via web interface or CLI. If version is v1.3411b190912, the device is vulnerable.Check Version:
Check via web interface at System Status or via CLI if availableVerify Fix Applied:
Verify firmware version has been updated to a version later than v1.3411b190912📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP requests to formPingCmd endpoint
- Multiple failed ping command attempts
- Abnormal traffic patterns to router management interface
Network Indicators:
- HTTP POST requests with unusually long submit-url parameters
- Traffic to router management interface from unexpected sources
SIEM Query:
source_ip="router_ip" AND (uri="*formPingCmd*" OR uri="*ping*" OR method="POST") AND (param="submit-url" OR param_length>1000)