{
    "id": "CVE-2010-0477",
    "published": "2010-04-14 16:00:01",
    "last_modified": "2026-06-16 23:16:15",
    "cvss_score": "10.0",
    "cvss_severity": "HIGH",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
    "cwe": "CWE-399",
    "description": "The SMB client in Microsoft Windows Server 2008 R2 and Windows 7 does not properly handle (1) SMBv1 and (2) SMBv2 response packets, which allows remote SMB servers and man-in-the-middle attackers to execute arbitrary code via a crafted packet that causes the client to read the entirety of the response, and then improperly interact with the Winsock Kernel (WSK), aka \"SMB Client Message Size Vulnerability.\"",
    "epss_score": "0.50186",
    "epss_percentile": "0.98871",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-28 18:17:08",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "microsoft",
            "product": "windows_7"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2008"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "12273",
            "title": "Microsoft Windows 7/2008 R2 - SMB Client Trans2 Stack Overflow (MS10-020) (PoC)",
            "date": "2010-04-17",
            "url": "https://www.exploit-db.com/exploits/12273"
        }
    ],
    "refs_list": [
        "http://secunia.com/advisories/39372",
        "http://www.us-cert.gov/cas/techalerts/TA10-103A.html",
        "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-020",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6859",
        "http://secunia.com/advisories/39372",
        "http://www.us-cert.gov/cas/techalerts/TA10-103A.html",
        "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-020",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6859"
    ]
}