{
  "id": "CVE-2021-41526",
  "sourceIdentifier": "PSIRT-CNA@flexerasoftware.com",
  "published": "2023-03-29T21:15:07.810",
  "lastModified": "2023-04-06T19:34:36.923",
  "vulnStatus": "Analyzed",
  "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 \u2018repair\u2019 of the MSI which has an InstallScript custom action."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:flexera:revenera_installshield:*:*:*:*:*:windows:*:*",
              "versionEndExcluding": "2021",
              "matchCriteriaId": "ED638412-2AD6-4860-9B87-C863984346AA"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:flexera:revenera_installshield:2021:-:*:*:*:windows:*:*",
              "matchCriteriaId": "08F8E0A6-92A1-4F49-B9C8-1698858587F4"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:flexera:revenera_installshield:2021:r1:*:*:*:windows:*:*",
              "matchCriteriaId": "7396B001-F8E1-48FB-AF78-E2FA8D81D662"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "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",
      "source": "PSIRT-CNA@flexerasoftware.com",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://github.com/mandiant/Vulnerability-Disclosures/blob/master/MNDT-2021-0011/MNDT-2021-0011.md",
      "source": "PSIRT-CNA@flexerasoftware.com",
      "tags": [
        "Third Party Advisory"
      ]
    }
  ]
}