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CVE-2024-48938

Estado: ModificadaAlta (7.5)—

Znuny before LTS 6.5.1 through 6.5.10 and 7.0.1 through 7.0.16 allows DoS/ReDos via email. Parsing the content of emails where HTML code is copied from Microsoft Word could lead to high CPU usage and block the parsing process.

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.

Vulnerabilidad de DoS/ReDoS remota sin autenticación (AV:N/PR:N/UI:N) en procesamiento de emails HTML. El ataque causa alto uso de CPU bloqueando el parsing, cumpliendo T1499.004 (aplicación como destino del DoS).

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)

Znuny — Znuny

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2024-48938",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-48938",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-10-15T18:44:51.502571Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/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
      },
      {
        "type": "Secondary",
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        "cvssData": {
          "scope": "UNCHANGED",
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          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
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          "confidentialityImpact": "NONE"
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  "affected": [
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      "affectedData": [
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          "versions": [
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              "status": "affected",
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  ],
  "published": "2024-10-11T21:15:07.387",
  "references": [
    {
      "url": "https://www.znuny.com",
      "tags": [
        "Product"
      ],
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    },
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      "url": "https://www.znuny.org/en/advisories",
      "tags": [
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      "source": "cve@mitre.org"
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    {
      "url": "https://www.znuny.org/en/advisories/zsa-2024-04",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1333"
        }
      ]
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    {
      "type": "Secondary",
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      "description": [
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          "value": "CWE-1333"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Znuny before LTS 6.5.1 through 6.5.10 and 7.0.1 through 7.0.16 allows DoS/ReDos via email. Parsing the content of emails where HTML code is copied from Microsoft Word could lead to high CPU usage and block the parsing process."
    },
    {
      "lang": "es",
      "value": "Las versiones anteriores a LTS 6.5.1 a 6.5.10 y 7.0.1 a 7.0.16 de Znuny permiten ataques DoS/ReDos por correo electrónico. Analizar el contenido de correos electrónicos en los que se copia código HTML de Microsoft Word podría generar un alto uso de la CPU y bloquear el proceso de análisis."
    }
  ],
  "lastModified": "2026-06-17T07:59:05.243",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:znuny:znuny:*:*:*:*:lts:*:*:*",
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              "versionEndExcluding": "6.1.0",
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            },
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          "operator": "OR"
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  "sourceIdentifier": "cve@mitre.org"
}