{
    "id": "CVE-2011-1872",
    "published": "2011-06-16 20:55:02",
    "last_modified": "2026-06-16 23:30:16",
    "cvss_score": "4.7",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:L/AC:M/Au:N/C:N/I:N/A:C",
    "cwe": "CWE-399",
    "description": "Hyper-V in Microsoft Windows Server 2008 Gold, SP2, R2, and R2 SP1 allows guest OS users to cause a denial of service (host OS infinite loop) via malformed machine instructions in a VMBus packet, aka \"VMBus Persistent DoS Vulnerability.\"",
    "epss_score": "0.02644",
    "epss_percentile": "0.85120",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-10-06 18:17:08",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "microsoft",
            "product": "windows_server_2008"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "17401",
            "title": "Microsoft HyperV - Persistent Denial of Service (MS11-047)",
            "date": "2011-06-14",
            "url": "https://www.exploit-db.com/exploits/17401"
        }
    ],
    "refs_list": [
        "http://www.securityfocus.com/bid/48179",
        "http://www.securitytracker.com/id?1025644",
        "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-047",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12650",
        "http://www.securityfocus.com/bid/48179",
        "http://www.securitytracker.com/id?1025644",
        "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-047",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12650"
    ]
}