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CVE-2021-37531

Estado: ModificadaAlta (8.8)—

SAP NetWeaver Knowledge Management XML Forms versions - 7.10, 7.11, 7.30, 7.31, 7.40, 7.50, contains an XSLT vulnerability which allows a non-administrative authenticated attacker to craft a malicious XSL stylesheet file containing a script with OS-level commands, copy it into a location to be accessed by the system and then create a file which will trigger the XSLT engine to execute the script contained within the malicious XSL file. This can result in a full compromise of the confidentiality, integrity, and availability of the system.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

SAP — Netweaver Knowledge Management XML Forms

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-37531",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 9,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
          "authentication": "SINGLE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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    "cvssMetricV30": [
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        "type": "Secondary",
        "source": "cna@sap.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.0",
          "baseScore": 9.9,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 3.1
      }
    ],
    "cvssMetricV31": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "cna@sap.com",
      "affectedData": [
        {
          "vendor": "SAP SE",
          "product": "SAP NetWeaver Knowledge Management XML Forms",
          "versions": [
            {
              "status": "affected",
              "version": "< 7.10"
            },
            {
              "status": "affected",
              "version": "< 7.11"
            },
            {
              "status": "affected",
              "version": "< 7.30"
            },
            {
              "status": "affected",
              "version": "< 7.31"
            },
            {
              "status": "affected",
              "version": "< 7.40"
            },
            {
              "status": "affected",
              "version": "< 7.50"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-09-14T12:15:10.030",
  "references": [
    {
      "url": "http://packetstormsecurity.com/files/165751/SAP-Enterprise-Portal-XSLT-Injection.html",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "cna@sap.com"
    },
    {
      "url": "http://seclists.org/fulldisclosure/2022/Jan/75",
      "tags": [
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        "Third Party Advisory"
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      "source": "cna@sap.com"
    },
    {
      "url": "https://launchpad.support.sap.com/#/notes/3081888",
      "tags": [
        "Permissions Required"
      ],
      "source": "cna@sap.com"
    },
    {
      "url": "https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=585106405",
      "tags": [
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      ],
      "source": "cna@sap.com"
    },
    {
      "url": "http://packetstormsecurity.com/files/165751/SAP-Enterprise-Portal-XSLT-Injection.html",
      "tags": [
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        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://seclists.org/fulldisclosure/2022/Jan/75",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://launchpad.support.sap.com/#/notes/3081888",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
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      "tags": [
        "Vendor Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "SAP NetWeaver Knowledge Management XML Forms versions - 7.10, 7.11, 7.30, 7.31, 7.40, 7.50, contains an XSLT vulnerability which allows a non-administrative authenticated attacker to craft a malicious XSL stylesheet file containing a script with OS-level commands, copy it into a location to be accessed by the system and then create a file which will trigger the XSLT engine to execute the script contained within the malicious XSL file. This can result in a full compromise of the confidentiality, integrity, and availability of the system."
    },
    {
      "lang": "es",
      "value": "SAP NetWeaver Knowledge Management XML Forms versiones - 7.10, 7.11, 7.30, 7.31, 7.40, 7.50, contienen una vulnerabilidad de tipo XSLT que permite a un atacante autenticado no administrativo diseñar un archivo de hoja de estilo XSL malicioso que contenga un script con comandos a nivel de sistema operativo, copiarlo en una ubicación a la que pueda acceder el sistema y, a continuación, crear un archivo que desencadene el motor XSLT para ejecutar el script contenido en el archivo XSL malicioso. Esto puede resultar en un compromiso total de la confidencialidad, integridad y disponibilidad del sistema"
    }
  ],
  "lastModified": "2026-06-17T04:00:41.303",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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  "sourceIdentifier": "cna@sap.com"
}