{
  "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-2021-42021",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-42021",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2021-11-09T11:32:15.000Z",
    "updatedAt": "2024-08-04T03:22:25.972Z",
    "importedAt": "2026-10-24T01:56:32.228Z",
    "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": null,
      "summary": "A vulnerability has been identified in Siveillance Video DLNA Server (2019 R1), Siveillance Video DLNA Server (2019 R2), Siveillance Video DLNA Server (2019 R3), Siveillance Video DLNA Server (2020 R1), Siveillance Video DLNA Server (2020 R2), Siveillance Video DLNA Server (2020 R3), Siveillance Video DLNA Server (2021 R1). The affected application contains a path traversal vulnerability that could allow to read arbitrary files on the server that are outside the application’s web document directory. An unauthenticated remote attacker could exploit this issue to access sensitive information for subsequent attacks.",
      "affected": [
        {
          "vendor": "Siemens",
          "product": "Siveillance Video DLNA Server",
          "versions": [
            {
              "version": "2019 R1",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Siemens",
          "product": "Siveillance Video DLNA Server",
          "versions": [
            {
              "version": "2019 R2",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Siemens",
          "product": "Siveillance Video DLNA Server",
          "versions": [
            {
              "version": "2019 R3",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Siemens",
          "product": "Siveillance Video DLNA Server",
          "versions": [
            {
              "version": "2020 R1",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Siemens",
          "product": "Siveillance Video DLNA Server",
          "versions": [
            {
              "version": "2020 R2",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Siemens",
          "product": "Siveillance Video DLNA Server",
          "versions": [
            {
              "version": "2020 R3",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Siemens",
          "product": "Siveillance Video DLNA Server",
          "versions": [
            {
              "version": "2021 R1",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}