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CVE-2025-42959

Estado: AplazadaAlta (8.1)—

An unauthenticated attacker may exploit a scenario where a Hashed Message Authentication Code (HMAC) credential, extracted from a system missing specific security patches, is reused in a replay attack against a different system. Even if the target system is fully patched, successful exploitation could result in complete system compromise, affecting confidentiality, integrity, and availability.

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.

Inferido por reglas deterministas a partir del vector CVSS y la CWE. Solo orientativo.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Vulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkFilter Network TrafficApplication Isolation and Sandboxing

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-42959",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-42959",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-07-11T03:55:26.171782Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cna@sap.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "cna@sap.com",
      "affectedData": [
        {
          "vendor": "SAP_SE",
          "product": "SAP NetWeaver ABAP Server and ABAP Platform",
          "versions": [
            {
              "status": "affected",
              "version": "SAP_BASIS 700"
            },
            {
              "status": "affected",
              "version": "SAP_BASIS 701"
            },
            {
              "status": "affected",
              "version": "SAP_BASIS 702"
            },
            {
              "status": "affected",
              "version": "SAP_BASIS 731"
            },
            {
              "status": "affected",
              "version": "SAP_BASIS 740"
            },
            {
              "status": "affected",
              "version": "SAP_BASIS 750"
            },
            {
              "status": "affected",
              "version": "SAP_BASIS 751"
            },
            {
              "status": "affected",
              "version": "SAP_BASIS 752"
            },
            {
              "status": "affected",
              "version": "SAP_BASIS 753"
            },
            {
              "status": "affected",
              "version": "SAP_BASIS 754"
            },
            {
              "status": "affected",
              "version": "SAP_BASIS 755"
            },
            {
              "status": "affected",
              "version": "SAP_BASIS 756"
            },
            {
              "status": "affected",
              "version": "SAP_BASIS 757"
            },
            {
              "status": "affected",
              "version": "SAP_BASIS 758"
            },
            {
              "status": "affected",
              "version": "SAP_BASIS 914"
            },
            {
              "status": "affected",
              "version": "SAP_BASIS 915"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2025-07-08T01:15:22.477",
  "references": [
    {
      "url": "https://me.sap.com/notes/3600846",
      "source": "cna@sap.com"
    },
    {
      "url": "https://url.sap/sapsecuritypatchday",
      "source": "cna@sap.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cna@sap.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-308"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An unauthenticated attacker may exploit a scenario where a Hashed Message Authentication Code (HMAC) credential, extracted from a system missing specific security patches, is reused in a replay attack against a different system. Even if the target system is fully patched, successful exploitation could result in complete system compromise, affecting confidentiality, integrity, and availability."
    },
    {
      "lang": "es",
      "value": "Un atacante no autenticado podría explotar una situación en la que una credencial de Código de Autenticación de Mensajes Hash (HMAC), extraída de un sistema sin parches de seguridad específicos, se reutiliza en un ataque de repetición contra otro sistema. Incluso si el sistema objetivo cuenta con todos los parches instalados, una explotación exitosa podría comprometer completamente el sistema, afectando la confidencialidad, la integridad y la disponibilidad."
    }
  ],
  "lastModified": "2026-06-17T09:23:18.067",
  "sourceIdentifier": "cna@sap.com"
}