CVE-2025-44879
📋 TL;DR
A buffer overflow vulnerability exists in the upload.cgi component of WS-WN572HP3 devices, allowing attackers to cause Denial of Service through specially crafted HTTP requests. This affects WS-WN572HP3 devices running firmware version V230525. Network administrators with exposed devices are primarily at risk.
💻 Affected Systems
- WINSTAR WS-WN572HP3
⚠️ 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 crash requiring physical reboot, potential remote code execution if buffer overflow can be controlled precisely
Likely Case
Service disruption through DoS, device becoming unresponsive to legitimate requests
If Mitigated
Limited impact with proper network segmentation and access controls
🎯 Exploit Status
Public technical details available, exploit requires HTTP request crafting
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: Yes
Instructions:
1. Check vendor website for firmware updates
2. Download latest firmware
3. Upload via device management interface
4. Reboot device after update
🔧 Temporary Workarounds
Disable upload.cgi access
linuxBlock HTTP requests to the vulnerable CGI component
iptables -A INPUT -p tcp --dport 80 -m string --string "/cgi-bin/upload.cgi" --algo bm -j DROP
Network segmentation
allRestrict access to device management interface
🧯 If You Can't Patch
- Implement strict network access controls to limit who can reach the device management interface
- Deploy WAF rules to block malicious HTTP requests targeting upload.cgi
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface or SSH, verify if version is V230525Check Version:
curl -s http://device-ip/ | grep -i firmwareVerify Fix Applied:
Verify firmware version has been updated from V230525, test upload.cgi functionality📡 Detection & Monitoring
Log Indicators:
- Multiple HTTP POST requests to /cgi-bin/upload.cgi with large payloads
- Device crash/restart logs
Network Indicators:
- HTTP traffic with oversized payloads to upload.cgi endpoint
- Unusual traffic patterns to device management port
SIEM Query:
source="device_logs" AND url="/cgi-bin/upload.cgi" AND size_bytes>10000