FKIE_CVE-2026-27671

Vulnerability from fkie_nvd - Published: 2026-06-09 01:16 - Updated: 2026-07-23 08:10
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Due to improper RFC protocol validation in the SAP Kernel used by the Application Server ABAP of SAP NetWeaver and ABAP Platform, an unauthenticated attacker can send a crafted RFC request that exploits logical errors in memory management, leading to memory corruption. This could lead to a high impact on the confidentiality, integrity, and availability of the application.
References
cna@sap.comhttps://me.sap.com/notes/3717897
cna@sap.comhttps://url.sap/sapsecuritypatchday
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "SAP NetWeaver AS ABAP and ABAP Platform",
          "vendor": "SAP_SE",
          "versions": [
            {
              "status": "affected",
              "version": "KRNL64NUC 7.22"
            },
            {
              "status": "affected",
              "version": "7.22EXT"
            },
            {
              "status": "affected",
              "version": "KRNL64UC 7.22"
            },
            {
              "status": "affected",
              "version": "722EXT"
            },
            {
              "status": "affected",
              "version": "7.53"
            },
            {
              "status": "affected",
              "version": "KERNEL 7.22"
            },
            {
              "status": "affected",
              "version": "7.54"
            },
            {
              "status": "affected",
              "version": "7.77"
            },
            {
              "status": "affected",
              "version": "7.89"
            },
            {
              "status": "affected",
              "version": "7.93"
            },
            {
              "status": "affected",
              "version": "9.16"
            },
            {
              "status": "affected",
              "version": "9.18"
            },
            {
              "status": "affected",
              "version": "91.9"
            }
          ]
        }
      ],
      "source": "cna@sap.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Due to improper RFC protocol validation in the SAP Kernel used by the Application Server ABAP of SAP NetWeaver and ABAP Platform, an unauthenticated attacker can send a crafted RFC request that exploits logical errors in memory management, leading to memory corruption. This could lead to a high impact on the confidentiality, integrity, and availability of the application."
    },
    {
      "lang": "es",
      "value": "Debido a una validaci\u00f3n incorrecta del protocolo RFC en el kernel de SAP utilizado por el servidor de aplicaciones ABAP de SAP NetWeaver y ABAP Platform, un atacante no autenticado puede enviar una solicitud RFC manipulada que explota errores l\u00f3gicos en la gesti\u00f3n de memoria, lo que lleva a la corrupci\u00f3n de memoria. Esto podr\u00eda tener un alto impacto en la confidencialidad, integridad y disponibilidad de la aplicaci\u00f3n."
    }
  ],
  "id": "CVE-2026-27671",
  "lastModified": "2026-07-23T08:10:00.137",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "cna@sap.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-27671",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-09T03:55:29.001312Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-09T01:16:45.903",
  "references": [
    {
      "source": "cna@sap.com",
      "url": "https://me.sap.com/notes/3717897"
    },
    {
      "source": "cna@sap.com",
      "url": "https://url.sap/sapsecuritypatchday"
    }
  ],
  "sourceIdentifier": "cna@sap.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-121"
        }
      ],
      "source": "cna@sap.com",
      "type": "Secondary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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