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CVE-2025-32415

Estado: ModificadaAlta (7.5)—

In libxml2 before 2.13.8 and 2.14.x before 2.14.2, xmlSchemaIDCFillNodeTables in xmlschemas.c has a heap-based buffer under-read. To exploit this, a crafted XML document must be validated against an XML schema with certain identity constraints, or a crafted XML schema must be used.

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/AC:L/PR:N sin UI sugiere explotación remota de aplicación expuesta (T1190). Buffer under-read en validación de esquema XML causa negación de servicio (DoS por crash/lectura anómala).

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

Tecnologías afectadas (1)

Xmlsoft — Libxml2

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2025-32415",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-32415",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-04-17T18:38:26.252207Z"
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    "cvssMetricV31": [
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          "integrityImpact": "NONE",
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          "attackComplexity": "HIGH",
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  "published": "2025-04-17T17:15:33.733",
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      "url": "https://lists.debian.org/debian-lts-announce/2025/04/msg00041.html",
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  "vulnStatus": "Modified",
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      "value": "In libxml2 before 2.13.8 and 2.14.x before 2.14.2, xmlSchemaIDCFillNodeTables in xmlschemas.c has a heap-based buffer under-read. To exploit this, a crafted XML document must be validated against an XML schema with certain identity constraints, or a crafted XML schema must be used."
    },
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      "value": "En libxml2 anterior a la versión 2.13.8 y 2.14.x anterior a la versión 2.14.2, xmlSchemaIDCFillNodeTables en xmlschemas.c presenta una sublectura del búfer basado en el montón. Para aprovechar esto, un documento XML creado debe validarse con un esquema XML con ciertas restricciones de identidad, o bien, debe utilizarse un esquema XML creado."
    }
  ],
  "lastModified": "2026-06-17T09:11:57.953",
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