{
    "data_type": "CVE",
    "data_format": "MITRE",
    "data_version": "4.0",
    "CVE_data_meta": {
        "ASSIGNER": "secure@microsoft.com",
        "ID": "CVE-2021-31166",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
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                            {
                                "product_name": "Windows 10 Version 2004 for 32-bit Systems",
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                                "product_name": "Windows 10 Version 2004 for ARM64-based Systems",
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                            {
                                "product_name": "Windows 10 Version 20H2 for x64-based Systems",
                                "version": {
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                                            "version_value": ""
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                            },
                            {
                                "product_name": "Windows 10 Version 20H2 for 32-bit Systems",
                                "version": {
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                            {
                                "product_name": "Windows 10 Version 20H2 for ARM64-based Systems",
                                "version": {
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                            {
                                "product_name": "Windows Server, version 20H2 (Server Core Installation)",
                                "version": {
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                    "vendor_name": "Microsoft"
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    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "HTTP Protocol Stack Remote Code Execution Vulnerability"
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Remote Code Execution"
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    "references": {
        "reference_data": [
            {
                "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31166",
                "refsource": "MISC",
                "name": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31166"
            },
            {
                "refsource": "MISC",
                "name": "http://packetstormsecurity.com/files/162722/Microsoft-HTTP-Protocol-Stack-Remote-Code-Execution.html",
                "url": "http://packetstormsecurity.com/files/162722/Microsoft-HTTP-Protocol-Stack-Remote-Code-Execution.html"
            }
        ]
    }
}