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CVE-2021-27634

Estado: ModificadaMedia (5.9)—

SAP NetWeaver AS for ABAP (RFC Gateway), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73,7.77,7.81,7.82,7.83, allows an unauthenticated attacker without specific knowledge of the system to send a specially crafted packet over a network which will trigger an internal error in the system due to improper input validation in method ThCpicDtCreate () causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.

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 Abap

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-27634",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Secondary",
        "source": "cna@sap.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.9,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "cna@sap.com",
      "affectedData": [
        {
          "vendor": "SAP SE",
          "product": "SAP NetWeaver AS for ABAP (RFC Gateway)",
          "versions": [
            {
              "status": "affected",
              "version": "< KRNL32NUC - 7.22"
            },
            {
              "status": "affected",
              "version": "< 7.22EXT"
            },
            {
              "status": "affected",
              "version": "< KRNL64NUC - 7.22"
            },
            {
              "status": "affected",
              "version": "< 7.49"
            },
            {
              "status": "affected",
              "version": "< KRNL64UC - 8.04"
            },
            {
              "status": "affected",
              "version": "< 7.22"
            },
            {
              "status": "affected",
              "version": "< 7.53"
            },
            {
              "status": "affected",
              "version": "< 7.73"
            },
            {
              "status": "affected",
              "version": "< KERNEL - 7.22"
            },
            {
              "status": "affected",
              "version": "< 8.04"
            },
            {
              "status": "affected",
              "version": "< 7.77"
            },
            {
              "status": "affected",
              "version": "< 7.81"
            },
            {
              "status": "affected",
              "version": "< 7.82"
            },
            {
              "status": "affected",
              "version": "< 7.83"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-06-09T14:15:09.390",
  "references": [
    {
      "url": "https://launchpad.support.sap.com/#/notes/3020209",
      "tags": [
        "Permissions Required",
        "Vendor Advisory"
      ],
      "source": "cna@sap.com"
    },
    {
      "url": "https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999",
      "tags": [
        "Broken Link",
        "Vendor Advisory"
      ],
      "source": "cna@sap.com"
    },
    {
      "url": "https://launchpad.support.sap.com/#/notes/3020209",
      "tags": [
        "Permissions Required",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999",
      "tags": [
        "Broken Link",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cna@sap.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "SAP NetWeaver AS for ABAP (RFC Gateway), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73,7.77,7.81,7.82,7.83, allows an unauthenticated attacker without specific knowledge of the system to send a specially crafted packet over a network which will trigger an internal error in the system due to improper input validation in method ThCpicDtCreate () causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified."
    },
    {
      "lang": "es",
      "value": "SAP NetWeaver AS para ABAP (RFC Gateway), versiones - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT, 7.49, KRNL64UC - 8.04,7.22,7.22EXT, 7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49 , 7.53,7.73,7.77,7.81,7.82,7.83, permite a un atacante no autenticado sin conocimiento específico del sistema enviar un paquete especialmente diseñado a través de una red que desencadenará un error interno en el sistema debido a una comprobación inapropiada de entrada en el método ThCpicDtCreate() causando el bloqueo del sistema y hacer que no esté disponible.&#xa0;En este ataque, ningún dato del sistema puede ser visualizado o modificado"
    }
  ],
  "lastModified": "2026-06-17T03:45:16.273",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:sap:netweaver_abap:kernel_7.22:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "816DBDA9-E4F1-476B-95B3-19758627E3A7"
            },
            {
              "criteria": "cpe:2.3:a:sap:netweaver_abap:kernel_7.49:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6B7DDF4E-F304-45E2-956B-7E6AA9EC03EA"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "E640D6CD-A1BA-46C5-B652-0A65F6FF17E4"
            },
            {
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              "matchCriteriaId": "B2EC1AB0-FB0D-4CBC-817B-E1F662D34064"
            },
            {
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            },
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          ],
          "operator": "OR"
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    }
  ],
  "sourceIdentifier": "cna@sap.com"
}