{
  "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-2021-33683",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-33683",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2021-07-14T11:04:45.000Z",
    "updatedAt": "2024-08-03T23:58:22.780Z",
    "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": "SAP Web Dispatcher and Internet Communication Manager (ICM), versions - KRNL32NUC 7.21, 7.21EXT, 7.22, 7.22EXT, KRNL32UC 7.21, 7.21EXT, 7.22, 7.22EXT, KRNL64NUC 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49, KRNL64UC 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49, 7.53, 7.73, WEBDISP 7.53, 7.73, 7.77, 7.81, 7.82, 7.83, KERNEL 7.21, 7.22, 7.49, 7.53, 7.73, 7.77, 7.81, 7.82, 7.83, process invalid HTTP header. The incorrect handling of the invalid Transfer-Encoding header in a particular manner leads to a possibility of HTTP Request Smuggling attack. An attacker could exploit this vulnerability to bypass web application firewall protection, divert sensitive data such as customer requests, session credentials, etc.",
      "affected": [
        {
          "vendor": "SAP SE",
          "product": "SAP Web Dispatcher and Internet Communication Manager",
          "versions": [
            {
              "version": "< KRNL32NUC 7.21",
              "status": "affected"
            },
            {
              "version": "< 7.21EXT",
              "status": "affected"
            },
            {
              "version": "< 7.22",
              "status": "affected"
            },
            {
              "version": "< 7.22EXT",
              "status": "affected"
            },
            {
              "version": "< KRNL32UC 7.21",
              "status": "affected"
            },
            {
              "version": "< KRNL64NUC 7.21",
              "status": "affected"
            },
            {
              "version": "< 7.49",
              "status": "affected"
            },
            {
              "version": "< KRNL64UC 7.21",
              "status": "affected"
            },
            {
              "version": "< 7.53",
              "status": "affected"
            },
            {
              "version": "< 7.73",
              "status": "affected"
            },
            {
              "version": "< WEBDISP 7.53",
              "status": "affected"
            },
            {
              "version": "< 7.77",
              "status": "affected"
            },
            {
              "version": "< 7.81",
              "status": "affected"
            },
            {
              "version": "< 7.82",
              "status": "affected"
            },
            {
              "version": "< 7.83",
              "status": "affected"
            },
            {
              "version": "< KERNEL 7.21",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}