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CVE-2019-10121

Estado: ModificadaCrítica (9.8)—

eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.15 use session IDs for authentication but lack authorization checks. An attacker can obtain a session ID via the user authentication dialogue, aka HMCCU-153. This leads to automatic login as admin.

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).

Tecnologías afectadas (2)

Eq-3 — Ccu2 FirmwareEq-3 — Ccu3 Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2019-10121",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
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        "obtainOtherPrivilege": false,
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          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
        "exploitabilityScore": 3.9
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  "affected": [
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      "affectedData": [
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          "product": "n/a",
          "versions": [
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              "status": "affected",
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  "published": "2019-07-10T12:15:12.250",
  "references": [
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      "url": "https://os-s.de/advisories/OSS-2018-01.pdf",
      "tags": [
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      "source": "cve@mitre.org"
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      "tags": [
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      "source": "cve@mitre.org"
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      "tags": [
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    {
      "url": "https://www.eq-3.de/Downloads/Software/CCU3-Firmware/CCU3-3.43.16/CCU3-Changelog.3.43.16.pdf",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.15 use session IDs for authentication but lack authorization checks. An attacker can obtain a session ID via the user authentication dialogue, aka HMCCU-153. This leads to automatic login as admin."
    },
    {
      "lang": "es",
      "value": "Los dispositivos CCU2 versiones anteriores a 2.41.8 y los dispositivos CCU3 versiones anteriores a 3.43.15 de HomeMatic eQ-3, usan identificadores de sesión para la identificación pero carecen de comprobación de autorización. Un atacante puede obtener un ID de sesión por medio del diálogo de identificación del usuario, también se conoce como HMCCU-153. Esto conlleva a un inicio de sesión automático como administrador."
    }
  ],
  "lastModified": "2026-06-17T02:10:16.910",
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