CVE-2025-41768
📋 TL;DR
A high-privileged remote attacker can inject malicious scripts into custom CSS fields on affected devices due to improper input sanitization. This cross-site scripting (XSS) vulnerability allows attackers to execute arbitrary code in victims' browsers. Organizations using the vulnerable devices with administrative web interfaces are affected.
💻 Affected Systems
- Specific product names not provided in CVE description
⚠️ 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
Attackers could steal administrator session cookies, perform actions as administrators, install backdoors, or pivot to internal networks.
Likely Case
Attackers would steal administrator credentials or session tokens to gain persistent access to the device management interface.
If Mitigated
With proper network segmentation and least privilege access, impact would be limited to the specific vulnerable device.
🎯 Exploit Status
Exploitation requires high-privileged access to the web interface. Attack complexity is low once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified
Vendor Advisory: https://certvde.com/de/advisories/VDE-2025-106
Restart Required: No
Instructions:
1. Check vendor advisory for specific patch information. 2. Apply vendor-provided security updates. 3. Verify the fix by testing the custom CSS field.
🔧 Temporary Workarounds
Disable Custom CSS Functionality
allRemove or disable the custom CSS input field in the web interface configuration
Configuration specific - consult device documentation
Implement Web Application Firewall
allDeploy WAF with XSS protection rules to filter malicious input
WAF configuration commands vary by product
🧯 If You Can't Patch
- Restrict network access to the management interface using firewall rules
- Implement strict input validation and output encoding for all user inputs
🔍 How to Verify
Check if Vulnerable:
Test the custom CSS field by attempting to inject script payloads like <script>alert('XSS')</script>Check Version:
Check device firmware/software version through web interface or CLIVerify Fix Applied:
Retest the custom CSS field with XSS payloads to confirm proper input sanitization📡 Detection & Monitoring
Log Indicators:
- Unusual administrator login patterns
- Multiple failed login attempts followed by successful login
- Suspicious POST requests to CSS configuration endpoints
Network Indicators:
- Unusual traffic to device management interface from unexpected sources
- HTTP requests containing script tags or JavaScript in CSS parameters
SIEM Query:
source="device_logs" AND (http_uri="*css*" OR http_uri="*custom*" OR http_method="POST") AND (http_user_agent="*script*" OR http_query="*<script>*")