{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2021-22283",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-22283",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2023-02-28T04:21:41.776Z",
    "updatedAt": "2025-03-07T18:12:14.516Z",
    "importedAt": "2026-10-24T01:56:26.894Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "MMS File Transfer Vulnerability impact on Distribution Automation products",
      "summary": "Improper Initialization vulnerability in ABB Relion protection relays - 611 series, ABB Relion protection relays - 615 series IEC 4.0 FP1, ABB Relion protection relays - 615 series CN 4.0 FP1, ABB Relion protection relays - 615 series IEC 5.0, ABB Relion protection relays - 615 series IEC 5.0 FP1, ABB Relion protection relays - 620 series IEC/CN 2.0, ABB Relion protection relays - 620 series IEC/CN 2.0 FP1, ABB Relion protection relays - REX640 PCL1, ABB Relion protection relays - REX640 PCL2, ABB Relion protection relays - REX640 PCL3, ABB Relion protection relays - RER615, ABB Remote Monitoring and Control - REC615, ABB Merging Unit- SMU615 allows Communication Channel Manipulation.This issue affects Relion protection relays - 611 series: from 1.0.0 before 2.0.3; Relion protection relays - 615 series IEC 4.0 FP1: from 4.1.0 before 4.1.9; Relion protection relays - 615 series CN 4.0 FP1: from 4.1.0 before 4.1.8; Relion protection relays - 615 series IEC 5.0: from 5.0.0 before 5.0.12; Relion protection relays - 615 series IEC 5.0 FP1: from 5.1.0 before 5.1.20; Relion protection relays - 620 series IEC/CN 2.0: from 2.0.0 before 2.0.11; Relion protection relays - 620 series IEC/CN 2.0 FP1: from 2.1.0 before 2.1.15; Relion protection relays - REX640 PCL1: from 1.0.0 before 1.0.8; Relion protection relays - REX640 PCL2: from 1.1.0 before 1.1.4; Relion protection relays - REX640 PCL3: from 1.2.0 before 1.2.1; Relion protection relays - RER615: from 2.0.0 before 2.0.3; Remote Monitoring and Control - REC615: from 1.0.0 before 2.0.3; Merging Unit- SMU615: from 1.0.0 before 1.0.2.\n\n",
      "affected": [
        {
          "vendor": "ABB",
          "product": "Relion protection relays - 611 series",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1.0.0",
              "status": "affected",
              "versionType": "firmware",
              "lessThan": "2.0.3"
            }
          ]
        },
        {
          "vendor": "ABB",
          "product": "Relion protection relays - 615 series IEC 4.0 FP1",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4.1.0",
              "status": "affected",
              "versionType": "firmware",
              "lessThan": " 4.1.9"
            }
          ]
        },
        {
          "vendor": "ABB",
          "product": "Relion protection relays - 615 series CN 4.0 FP1",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4.1.0",
              "status": "affected",
              "versionType": "firmware",
              "lessThan": "4.1.8"
            }
          ]
        },
        {
          "vendor": "ABB",
          "product": "Relion protection relays - 615 series IEC 5.0",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "5.0.0",
              "status": "affected",
              "versionType": "firmware",
              "lessThan": "5.0.12"
            }
          ]
        },
        {
          "vendor": "ABB",
          "product": "Relion protection relays - 615 series IEC 5.0 FP1",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "5.1.0",
              "status": "affected",
              "versionType": "firmware",
              "lessThan": "5.1.20"
            }
          ]
        },
        {
          "vendor": "ABB",
          "product": "Relion protection relays - 620 series IEC/CN 2.0",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2.0.0",
              "status": "affected",
              "versionType": "firmware",
              "lessThan": "2.0.11"
            }
          ]
        },
        {
          "vendor": "ABB",
          "product": "Relion protection relays - 620 series IEC/CN 2.0 FP1",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2.1.0",
              "status": "affected",
              "versionType": "firmware",
              "lessThan": "2.1.15"
            }
          ]
        },
        {
          "vendor": "ABB",
          "product": "Relion protection relays - REX640 PCL1",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1.0.0",
              "status": "affected",
              "versionType": "firmware",
              "lessThan": "1.0.8"
            }
          ]
        },
        {
          "vendor": "ABB",
          "product": "Relion protection relays - REX640 PCL2",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1.1.0",
              "status": "affected",
              "versionType": "firmware",
              "lessThan": "1.1.4"
            }
          ]
        },
        {
          "vendor": "ABB",
          "product": "Relion protection relays - REX640 PCL3",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1.2.0",
              "status": "affected",
              "versionType": "firmware",
              "lessThan": "1.2.1"
            }
          ]
        },
        {
          "vendor": "ABB",
          "product": "Relion protection relays - RER615",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2.0.0",
              "status": "affected",
              "versionType": "firmware",
              "lessThan": "2.0.3"
            }
          ]
        },
        {
          "vendor": "ABB",
          "product": "Remote Monitoring and Control - REC615",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1.0.0",
              "status": "affected",
              "versionType": "firmware",
              "lessThan": "2.0.3"
            }
          ]
        },
        {
          "vendor": "ABB",
          "product": "Merging Unit- SMU615",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1.0.0",
              "status": "affected",
              "versionType": "firmware",
              "lessThan": "1.0.2"
            }
          ]
        }
      ]
    }
  }
}