« Volver al listado

CVE-2021-41526

Estado: ModificadaAlta (7.8)—

A vulnerability has been reported in the windows installer (MSI) built with InstallScript custom action. This vulnerability may allow privilege escalation when invoked ‘repair’ of the MSI which has an InstallScript custom action.

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)

Flexera — Revenera Installshield

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-41526",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-41526",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-07-24T14:30:28.705266Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "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-CNA@flexerasoftware.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:flexera:revenera_installshield:-:*:*:*:*:windows:*:*"
          ],
          "vendor": "flexera",
          "product": "revenera_installshield",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "2021",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unknown"
        },
        {
          "cpes": [
            "cpe:2.3:a:flexera:revenera_installshield:2021:-:*:*:*:windows:*:*"
          ],
          "vendor": "flexera",
          "product": "revenera_installshield",
          "versions": [
            {
              "status": "affected",
              "version": "2021"
            }
          ],
          "defaultStatus": "unknown"
        },
        {
          "cpes": [
            "cpe:2.3:a:flexera:revenera_installshield:2021:r1:*:*:*:windows:*:*"
          ],
          "vendor": "flexera",
          "product": "revenera_installshield",
          "versions": [
            {
              "status": "affected",
              "version": "2021"
            }
          ],
          "defaultStatus": "unknown"
        }
      ]
    }
  ],
  "published": "2023-03-29T21:15:07.810",
  "references": [
    {
      "url": "http://seclists.org/fulldisclosure/2024/Apr/24",
      "source": "PSIRT-CNA@flexerasoftware.com"
    },
    {
      "url": "https://community.flexera.com/t5/InstallShield-Knowledge-Base/CVE-2021-41526-Privilege-escalation-vulnerability-during-MSI/ta-p/218137/jump-to/first-unread-message",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "PSIRT-CNA@flexerasoftware.com"
    },
    {
      "url": "https://github.com/mandiant/Vulnerability-Disclosures/blob/master/MNDT-2021-0011/MNDT-2021-0011.md",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "PSIRT-CNA@flexerasoftware.com"
    },
    {
      "url": "http://seclists.org/fulldisclosure/2024/Apr/24",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://community.flexera.com/t5/InstallShield-Knowledge-Base/CVE-2021-41526-Privilege-escalation-vulnerability-during-MSI/ta-p/218137/jump-to/first-unread-message",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/mandiant/Vulnerability-Disclosures/blob/master/MNDT-2021-0011/MNDT-2021-0011.md",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability has been reported in the windows installer (MSI) built with InstallScript custom action. This vulnerability may allow privilege escalation when invoked ‘repair’ of the MSI which has an InstallScript custom action."
    }
  ],
  "lastModified": "2026-06-17T04:08:35.530",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:flexera:revenera_installshield:*:*:*:*:*:windows:*:*",
              "vulnerable": true,
              "matchCriteriaId": "ED638412-2AD6-4860-9B87-C863984346AA",
              "versionEndExcluding": "2021"
            },
            {
              "criteria": "cpe:2.3:a:flexera:revenera_installshield:2021:-:*:*:*:windows:*:*",
              "vulnerable": true,
              "matchCriteriaId": "08F8E0A6-92A1-4F49-B9C8-1698858587F4"
            },
            {
              "criteria": "cpe:2.3:a:flexera:revenera_installshield:2021:r1:*:*:*:windows:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7396B001-F8E1-48FB-AF78-E2FA8D81D662"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "PSIRT-CNA@flexerasoftware.com"
}