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CVE-2021-27766

Estado: ModificadaAlta (7.8)—

The BigFix Client installer is created with InstallShield, which was affected by CVE-2021-41526, a vulnerability that could allow a local user to perform a privilege escalation. This vulnerability was resolved by updating to an InstallShield version with the underlying vulnerability fixed.

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)

Hcltech — Bigfix Platform

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-27766",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.6,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/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": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@hcl.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 6.7,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4.7,
        "exploitabilityScore": 1.5
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@hcl.com",
      "affectedData": [
        {
          "vendor": "HCL Software",
          "product": "BigFix Platform",
          "versions": [
            {
              "status": "affected",
              "version": "9.5 - 9.5.18, 10 - 10.0.5"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-05-06T18:15:09.070",
  "references": [
    {
      "url": "https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2022/MNDT-2022-0024/MNDT-2022-0024.md",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "psirt@hcl.com"
    },
    {
      "url": "https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0098116",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@hcl.com"
    },
    {
      "url": "https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2022/MNDT-2022-0024/MNDT-2022-0024.md",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0098116",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@hcl.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The BigFix Client installer is created with InstallShield, which was affected by CVE-2021-41526, a vulnerability that could allow a local user to perform a privilege escalation. This vulnerability was resolved by updating to an InstallShield version with the underlying vulnerability fixed."
    },
    {
      "lang": "es",
      "value": "El instalador de BigFix Client es creado con InstallShield, que estaba afectado por CVE-2021-41526, una vulnerabilidad que podía permitir a un usuario local llevar a cabo una elevación de privilegios. Esta vulnerabilidad fue resuelta mediante la actualización a una versión de InstallShield con la vulnerabilidad subyacente corregida"
    }
  ],
  "lastModified": "2026-06-17T03:45:25.227",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:hcltech:bigfix_platform:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E7F891B6-507E-4F65-8F27-5C8893C8C911",
              "versionEndIncluding": "9.5.18",
              "versionStartIncluding": "9.5"
            },
            {
              "criteria": "cpe:2.3:a:hcltech:bigfix_platform:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5AC80717-EA80-4FB3-83A6-E8DD4E7FB1B7",
              "versionEndIncluding": "10.0.5",
              "versionStartIncluding": "10"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@hcl.com"
}