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CVE-2021-27795

Estado: ModificadaAlta (8.1)—

Brocade Fabric OS (FOS) hardware platforms running any version of Brocade Fabric OS software, which supports the license string format; contain cryptographic issues that could allow for the installation of forged or fraudulent license keys. This would allow attackers or a malicious party to forge a counterfeit license key that the Brocade Fabric OS platform would authenticate and activate as if it were a legitimate license key.

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 (1)

Broadcom — Fabric Operating System

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-27795",
  "cveTags": [],
  "metrics": {
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        "type": "Secondary",
        "source": "sirt@brocade.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.4,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 4.7,
        "exploitabilityScore": 1.6
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "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": "sirt@brocade.com",
      "affectedData": [
        {
          "vendor": "Brocade",
          "product": "Brocade Switches",
          "versions": [
            {
              "status": "affected",
              "version": "All Version"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2023-12-06T02:15:06.573",
  "references": [
    {
      "url": "https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/21289",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "sirt@brocade.com"
    },
    {
      "url": "https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/21289",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "sirt@brocade.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-327"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-327"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Brocade Fabric OS (FOS) hardware \nplatforms running any version of Brocade Fabric OS software, which \nsupports the license string format; contain cryptographic \nissues that could allow for the installation of forged or fraudulent \nlicense keys. This would allow attackers or a malicious party to forge a\n counterfeit license key that the Brocade Fabric OS platform would \nauthenticate and activate as if it were a legitimate license key. \n\n\n\n"
    },
    {
      "lang": "es",
      "value": "Plataformas de hardware Brocade Fabric OS (FOS) que ejecutan cualquier versión del software Brocade Fabric OS, que admita el formato de cadena de licencia; contienen problemas criptográficos que podrían permitir la instalación de claves de licencia falsificadas o fraudulentas. Esto permitiría a los atacantes o a una parte malintencionada falsificar una clave de licencia falsa que la plataforma Brocade Fabric OS autenticaría y activaría como si fuera una clave de licencia legítima."
    }
  ],
  "lastModified": "2026-06-17T03:45:28.140",
  "configurations": [
    {
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          "operator": "OR"
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  "sourceIdentifier": "sirt@brocade.com"
}