{
    "impact": {
        "cvssv3": {
            "BM": {
                "AV": "N",
                "SCORE": "5.900",
                "C": "N",
                "S": "U",
                "AC": "H",
                "A": "H",
                "UI": "N",
                "I": "N",
                "PR": "N"
            },
            "TM": {
                "RC": "C",
                "E": "U",
                "RL": "O"
            }
        }
    },
    "data_format": "MITRE",
    "CVE_data_meta": {
        "STATE": "PUBLIC",
        "ID": "CVE-2021-20501",
        "DATE_PUBLIC": "2021-04-20T00:00:00",
        "ASSIGNER": "psirt@us.ibm.com"
    },
    "references": {
        "reference_data": [
            {
                "url": "https://www.ibm.com/support/pages/node/6445505",
                "name": "https://www.ibm.com/support/pages/node/6445505",
                "refsource": "CONFIRM",
                "title": "IBM Security Bulletin 6445505 (i)"
            },
            {
                "title": "X-Force Vulnerability Report",
                "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/198056",
                "name": "ibm-i-cve202120501-dos (198056)",
                "refsource": "XF"
            }
        ]
    },
    "data_type": "CVE",
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "value": "Denial of Service",
                        "lang": "eng"
                    }
                ]
            }
        ]
    },
    "data_version": "4.0",
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "7.1"
                                        },
                                        {
                                            "version_value": "7.2"
                                        },
                                        {
                                            "version_value": "7.3"
                                        },
                                        {
                                            "version_value": "7.4"
                                        }
                                    ]
                                },
                                "product_name": "i"
                            }
                        ]
                    },
                    "vendor_name": "IBM"
                }
            ]
        }
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "IBM i 7.1, 7.2, 7.3, and 7.4 SMTP allows a network attacker to send emails to non-existent local-domain recipients to the SMTP server, caused by using a non-default configuration. An attacker could exploit this vulnerability to consume unnecessary network bandwidth and disk space, and allow remote attackers to send spam email. IBM X-Force ID: 198056."
            }
        ]
    }
}