cvelist/2021/34xxx/CVE-2021-34473.json

{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2021-34473",
        "ASSIGNER": "secure@microsoft.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Microsoft Exchange Server Remote Code Execution Vulnerability"
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Remote Code Execution"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Microsoft",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Microsoft Exchange Server 2013 Cumulative Update 23",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "15.00.0",
                                            "version_value": "15.00.1497.015"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "Microsoft Exchange Server 2019 Cumulative Update 9",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "15.02.0",
                                            "version_value": "15.02.0858.010"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "Microsoft Exchange Server 2016 Cumulative Update 20",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "15.01.0",
                                            "version_value": "15.01.2242.008"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "Microsoft Exchange Server 2016 Cumulative Update 19",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "15.01.0",
                                            "version_value": "15.01.2176.012"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "Microsoft Exchange Server 2019 Cumulative Update 8",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "15.02.0",
                                            "version_value": "15.02.0792.013"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34473",
                "refsource": "MISC",
                "name": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34473"
            },
            {
                "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-821/",
                "refsource": "MISC",
                "name": "https://www.zerodayinitiative.com/advisories/ZDI-21-821/"
            },
            {
                "url": "http://packetstormsecurity.com/files/163895/Microsoft-Exchange-ProxyShell-Remote-Code-Execution.html",
                "refsource": "MISC",
                "name": "http://packetstormsecurity.com/files/163895/Microsoft-Exchange-ProxyShell-Remote-Code-Execution.html"
            }
        ]
    },
    "impact": {
        "cvss": [
            {
                "version": "3.1",
                "baseSeverity": "CRITICAL",
                "baseScore": 9.1,
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C"
            }
        ]
    }
}