Edimax BR-6478AC POST Request formL2TPSetup buffer overflow_CVE-2026-9443

{
    "lastseen": "",
    "description": "A security vulnerability has been detected in Edimax BR-6478AC 1.23. This vulnerability affects the function formL2TPSetup of the file /goform/formL2TPSetup of the component POST Request Handler. The manipulation of the argument L2TPUserName leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.",
    "published": "2026-05-25T08:45:07.806Z",
    "modified": "2026-05-25T08:45:07.806Z",
    "type": "cve",
    "title": "Edimax BR-6478AC POST Request formL2TPSetup buffer overflow",
    "source": "VulDB",
    "references": "https://vuldb.com/vuln/365424\nhttps://vuldb.com/vuln/365424/cti\nhttps://vuldb.com/submit/818452\nhttps://lavender-bicycle-a5a.notion.site/EDIMAX-BR6478ACV2-formL2TPSetup-34b53a41781f809e9c30c1260cc5d92e?source=copy_link",
    "id": "CVE-2026-9443",
    "bulletinFamily": "",
    "cwe": [
        "CWE-120",
        "CWE-119"
    ],
    "cvelist": null,
    "sourceData": "Edimax BR-6478AC 1.23",
    "sourceHref": "",
    "cvss": {
        "score": 8.7,
        "severity": "HIGH",
        "vector": "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",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "BR-6478AC",
    "version": "1.23",
    "vendor": "Edimax",
    "ai_description": "Buffer overflow vulnerability in the formL2TPSetup function of Edimax BR-6478AC 1.23, allowing remote attackers to exploit the L2TPUserName argument.",
    "ai_severity": "High",
    "ai_vendor": "Edimax",
    "ai_product": "BR-6478AC",
    "ai_version": "1.23",
    "ai_score": 8.7
}