CVE-2025-20166
📋 TL;DR
This cross-site scripting (XSS) vulnerability in Cisco CSPC's web management interface allows authenticated attackers to inject malicious scripts. Attackers could steal session cookies, redirect users, or perform actions on behalf of authenticated users. Organizations using vulnerable Cisco CSPC versions with authenticated user access are affected.
💻 Affected Systems
- Cisco Common Services Platform Collector (CSPC)
📦 What is this software?
Common Services Platform Collector by Cisco
View all CVEs affecting Common Services Platform Collector →
Common Services Platform Collector by Cisco
View all CVEs affecting Common Services Platform Collector →
Common Services Platform Collector by Cisco
View all CVEs affecting Common Services Platform Collector →
Common Services Platform Collector by Cisco
View all CVEs affecting Common Services Platform Collector →
⚠️ Risk & Real-World Impact
Worst Case
Attacker gains administrative privileges through session hijacking, leading to complete system compromise, data exfiltration, or ransomware deployment.
Likely Case
Attacker steals session cookies or credentials from authenticated users, enabling lateral movement within the network.
If Mitigated
Limited to low-privileged user actions if proper input validation and output encoding are implemented.
🎯 Exploit Status
Requires authenticated access but XSS exploitation is well-understood and tools exist.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not yet released
Vendor Advisory: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cspc-xss-CDOJZyH
Restart Required: Yes
Instructions:
1. Monitor Cisco Security Advisories for patch release. 2. Apply patch when available. 3. Restart CSPC services.
🧯 If You Can't Patch
- Implement strict input validation and output encoding at web application firewall level.
- Restrict access to CSPC management interface to trusted networks only.
🔍 How to Verify
Check if Vulnerable:
Check CSPC version against Cisco advisory and verify if web interface accepts unvalidated input in vulnerable parameters.Check Version:
Check CSPC web interface admin panel or system information page for version details.Verify Fix Applied:
Verify installed version matches patched version from Cisco advisory and test XSS payloads in vulnerable parameters.📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript or script tags in web request logs
- Multiple failed authentication attempts followed by successful login
Network Indicators:
- Suspicious HTTP requests containing script tags or JavaScript to CSPC interface
SIEM Query:
source="cspc_web_logs" AND (http_request CONTAINS "<script>" OR http_request CONTAINS "javascript:")