CVE-2025-41758
📋 TL;DR
A low-privileged remote attacker can exploit a path traversal vulnerability in the wwupload.cgi endpoint to write arbitrary files on affected systems. This can lead to complete system compromise by overwriting critical files. Any system running vulnerable software with the wwupload.cgi endpoint exposed is affected.
💻 Affected Systems
- Specific product information not provided in reference
⚠️ 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
Full system compromise leading to data theft, ransomware deployment, or complete system destruction
Likely Case
Privilege escalation to root/admin followed by persistence establishment and lateral movement
If Mitigated
Limited impact if endpoint is not exposed or proper file permissions prevent critical file overwrites
🎯 Exploit Status
Exploitation requires low-privileged access. Path traversal vulnerabilities are typically straightforward to exploit once identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://www.mbs-solutions.de/mbs-2025-0001
Restart Required: No
Instructions:
1. Monitor vendor advisory for patch release. 2. Apply patch when available. 3. Verify wwupload.cgi endpoint is secured.
🔧 Temporary Workarounds
Disable wwupload.cgi endpoint
linuxRemove or disable access to the vulnerable CGI endpoint
mv /path/to/wwupload.cgi /path/to/wwupload.cgi.disabled
chmod 000 /path/to/wwupload.cgi
Implement strict file permissions
linuxSet restrictive permissions on critical system directories
chmod 755 /usr /etc /bin
chmod 700 /root
🧯 If You Can't Patch
- Implement network segmentation to isolate affected systems
- Deploy web application firewall with path traversal protection rules
🔍 How to Verify
Check if Vulnerable:
Check if wwupload.cgi endpoint exists and is accessible: curl -v http://target/wwupload.cgiCheck Version:
Check software version through vendor-specific methods (not specified)Verify Fix Applied:
Verify wwupload.cgi endpoint is no longer accessible or returns proper error📡 Detection & Monitoring
Log Indicators:
- Unusual file write operations in system logs
- Multiple failed or successful requests to wwupload.cgi with ../ patterns
Network Indicators:
- HTTP requests to wwupload.cgi containing path traversal sequences (../)
SIEM Query:
source="web_logs" AND uri="*wwupload.cgi*" AND (uri="*../*" OR uri="*..%2f*")