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CVE-2026-44756

Estado: Pendiente de análisisCrítica (10)—

A memory safety vulnerability exists in the Extended Passport Protocol (EPP) processing library. Under specific conditions, an unauthenticated attacker could exploit a crafted network request containing a malformed EPP header, potentially resulting in undefined behavior and abnormal program termination. Successful exploitation may have a high impact on the confidentiality, integrity, and availability of the application.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

AV:N, PR:N, UI:N indica red sin autenticación (T1190). El CWE-120 (buffer overflow) y la descripción de 'undefined behavior' permiten RCE (T1059) e interrupción del servicio (T1499.004 DoS de aplicación).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-44756",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-44756",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-08T12:42:08.435607Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cna@sap.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 10,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cna@sap.com",
      "affectedData": [
        {
          "vendor": "SAP_SE",
          "product": "SAP Extended Passport (EPP) Processing",
          "versions": [
            {
              "status": "affected",
              "version": "KRNL64NUC 7.22"
            },
            {
              "status": "affected",
              "version": "7.22EXT"
            },
            {
              "status": "affected",
              "version": "KRNL64UC 7.22"
            },
            {
              "status": "affected",
              "version": "7.53"
            },
            {
              "status": "affected",
              "version": "8.04"
            },
            {
              "status": "affected",
              "version": "WEBDISP 9.16"
            },
            {
              "status": "affected",
              "version": "9.18"
            },
            {
              "status": "affected",
              "version": "9.19"
            },
            {
              "status": "affected",
              "version": "9.20"
            },
            {
              "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"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-09-08T01:17:30.840",
  "references": [
    {
      "url": "https://me.sap.com/notes/3747649",
      "source": "cna@sap.com"
    },
    {
      "url": "https://url.sap/sapsecuritypatchday",
      "source": "cna@sap.com"
    },
    {
      "url": "http://seclists.org/fulldisclosure/2026/Sep/65",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cna@sap.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A memory safety vulnerability exists in the Extended Passport Protocol (EPP) processing library. Under specific conditions, an unauthenticated attacker could exploit a crafted network request containing a malformed EPP header, potentially resulting in undefined behavior and abnormal program termination. Successful exploitation may have a high impact on the confidentiality, integrity, and availability of the application."
    }
  ],
  "lastModified": "2026-09-22T21:17:30.593",
  "sourceIdentifier": "cna@sap.com"
}