CVE-2025-57703
📋 TL;DR
CVE-2025-57703 is a reflected cross-site scripting (XSS) vulnerability in DIAEnergie software that allows attackers to inject malicious scripts into web pages viewed by users. This affects organizations using vulnerable versions of DIAEnergie for energy management. Attackers can execute arbitrary JavaScript in the context of victim users' browsers.
💻 Affected Systems
- DIAEnergie
📦 What is this software?
Diaenergie by Deltaww
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform actions as authenticated users, redirect to malicious sites, or install malware on user systems.
Likely Case
Attackers craft malicious links containing XSS payloads, trick users into clicking them, and steal session tokens or credentials.
If Mitigated
With proper input validation and output encoding, malicious scripts are neutralized before reaching users.
🎯 Exploit Status
Exploitation requires user interaction (clicking malicious link) and knowledge of vulnerable parameters.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Latest version after applying Delta security advisory PCSA-2025-00012
Vendor Advisory: https://filecenter.deltaww.com/news/download/doc/Delta-PCSA-2025-00012_DIAEnergie%20Cross-Site%20Scripting%20Vulnerabilities.pdf
Restart Required: No
Instructions:
1. Download the security patch from Delta Electronics support portal. 2. Apply the patch according to vendor instructions. 3. Verify the fix by testing previously vulnerable parameters.
🔧 Temporary Workarounds
Implement Web Application Firewall (WAF)
allDeploy a WAF with XSS protection rules to filter malicious input before it reaches the application.
Content Security Policy (CSP)
allImplement strict CSP headers to restrict script execution sources and prevent inline script execution.
🧯 If You Can't Patch
- Restrict network access to DIAEnergie web interface to trusted users only
- Educate users about phishing risks and not clicking untrusted links
🔍 How to Verify
Check if Vulnerable:
Test URL parameters by injecting basic XSS payloads like <script>alert('XSS')</script> and check if they execute in browser.Check Version:
Check DIAEnergie version in application interface or consult vendor documentation.Verify Fix Applied:
Retest the same XSS payloads after patching; they should be properly encoded or rejected.📡 Detection & Monitoring
Log Indicators:
- Unusual long parameter values in web logs
- Requests containing script tags or JavaScript in URL parameters
Network Indicators:
- HTTP requests with suspicious characters in query strings
- Multiple failed XSS attempts from same source
SIEM Query:
source="web_logs" AND (url="*<script>*" OR url="*javascript:*" OR url="*onerror=*" OR url="*onload=*")