H3C Magic B3 aspForm UpdateWanParams buffer overflow_CVE-2026-8764

{
    "lastseen": "",
    "description": "A security vulnerability has been detected in H3C Magic B3 up to 100R002. This affects the function UpdateWanParams of the file /goform/aspForm. Such manipulation of the argument param leads to buffer overflow. The attack may be performed from remote. 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": "2026-05-17T21:30:11.744Z",
    "modified": "2026-05-17T21:30:11.744Z",
    "type": "cve",
    "title": "H3C Magic B3 aspForm UpdateWanParams buffer overflow",
    "source": "VulDB",
    "references": "https://vuldb.com/vuln/364389\nhttps://vuldb.com/vuln/364389/cti\nhttps://vuldb.com/submit/811373\nhttps://github.com/yyyy0031/CVE/issues/1",
    "id": "CVE-2026-8764",
    "bulletinFamily": "",
    "cwe": [
        "CWE-120",
        "CWE-119"
    ],
    "cvelist": null,
    "sourceData": "H3C Magic B3 100R002",
    "sourceHref": "",
    "cvss": {
        "score": 8.6,
        "severity": "HIGH",
        "vector": "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",
        "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": "Magic B3",
    "version": "100R002",
    "vendor": "H3C",
    "ai_description": "Buffer overflow vulnerability in H3C Magic B3 up to 100R002 via the UpdateWanParams function in the /goform/aspForm file, allowing remote attackers to exploit the vulnerability.",
    "ai_severity": "High",
    "ai_vendor": "H3C",
    "ai_product": "Magic B3",
    "ai_version": "100R002",
    "ai_score": 8.6
}