{
    "id": "CVE-2020-0646",
    "published": "2020-01-14 23:15:33",
    "last_modified": "2026-06-17 02:46:15",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-91",
    "description": "A remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properly, aka '.NET Framework Remote Code Execution Injection Vulnerability'.",
    "epss_score": "0.99222",
    "epss_percentile": "0.99935",
    "kev": 1,
    "kev_due": "2022-05-03",
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:25:19",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-05-03."
    },
    "products": [
        {
            "vendor": "microsoft",
            "product": ".net_framework"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_1507"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_1607"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_1709"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_1803"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_1809"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_1903"
        },
        {
            "vendor": "microsoft",
            "product": "windows_10_1909"
        },
        {
            "vendor": "microsoft",
            "product": "windows_7"
        },
        {
            "vendor": "microsoft",
            "product": "windows_8.1"
        },
        {
            "vendor": "microsoft",
            "product": "windows_rt_8.1"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2008"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2012"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2016"
        },
        {
            "vendor": "microsoft",
            "product": "windows_server_2019"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2020-0646",
        "date_added": "2021-11-03",
        "due_date": "2022-05-03",
        "vendor": "Microsoft",
        "product": ".NET Framework",
        "name": "Microsoft .NET Framework Remote Code Execution Vulnerability",
        "ransomware": 0
    },
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "48275",
            "title": "SharePoint Workflows - XOML Injection (Metasploit)",
            "date": "2020-03-31",
            "url": "https://www.exploit-db.com/exploits/48275"
        }
    ],
    "refs_list": [
        "http://packetstormsecurity.com/files/156930/SharePoint-Workflows-XOML-Injection.html",
        "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0646",
        "http://packetstormsecurity.com/files/156930/SharePoint-Workflows-XOML-Injection.html",
        "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0646",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-0646"
    ]
}