CVE-2021-47945

import os import win32service import win32con # Proof of Concept: Check for Unquoted Service Path # This script simulates checking the DVRWatchdog service def check_unquoted_service_path(service_name): try: # In a real scenario, this would query the registry # hkey = win32service.OpenSCManager(None, None, win32service.SC_MANAGER_CONNECT) # service = win32service.OpenService(hkey, service_name, win32service.SERVICE_QUERY_CONFIG) # config = win32service.QueryServiceConfig(service) # Simulated vulnerable path image_path = "C:\\Program Files\\Argus\\DVRWatchdog.exe" if not image_path.startswith('"') and " " in image_path: print(f"[+] Vulnerable Service Found: {service_name}") print(f"[+] Unquoted Path: {image_path}") # Check for write access in the path segments parts = image_path.split('\\') current_path = "" for part in parts[:-1]: current_path += part + "\\" # Check if directory is writable (simplified logic) if os.path.exists(current_path): print(f"[*] Checking write access for: {current_path}") # If writable, an attacker could drop 'Program.exe' here else: print("[-] Service path is quoted or contains no spaces.") except Exception as e: print(f"Error: {e}") if __name__ == "__main__": check_unquoted_service_path("DVRWatchdog")

{"cve": {"id": "CVE-2021-47945", "sourceIdentifier": "[email protected]", "published": "2026-05-10T13:16:30.897", "lastModified": "2026-05-13T15:30:24.603", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Argus Surveillance DVR 4.0 contains an unquoted service path vulnerability in the DVRWatchdog service that allows local attackers to escalate privileges by exploiting the service binary path. Attackers can place a malicious executable in the Program Files directory to be executed with LocalSystem privileges when the service starts."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/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": 8.5, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-428"}]}], "references": [{"url": "https://www.exploit-db.com/exploits/50261", "source": "[email protected]"}, {"url": "https://www.vulncheck.com/advisories/argus-surveillance-dvr-unquoted-service-path-privilege-escalation", "source": "[email protected]"}]}}