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CVE-2021-42255

Estado: ModificadaAlta (7.8)—

AppGuard Enterprise before 6.7.100.1 creates a Temporary File in a Directory with Insecure Permissions. Local users can gain SYSTEM privileges because a repair operation relies on the %TEMP% directory of an unprivileged user.

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)

Blueplanet-works — Appguard

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-42255",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.2,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "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": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-04-12T16:15:08.343",
  "references": [
    {
      "url": "https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2022/MNDT-2022-0022/MNDT-2022-0022.md",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.beyondtrust.com/blog",
      "tags": [
        "Not Applicable"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2022/MNDT-2022-0022/MNDT-2022-0022.md",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.beyondtrust.com/blog",
      "tags": [
        "Not Applicable"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-668"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "AppGuard Enterprise before 6.7.100.1 creates a Temporary File in a Directory with Insecure Permissions. Local users can gain SYSTEM privileges because a repair operation relies on the %TEMP% directory of an unprivileged user."
    },
    {
      "lang": "es",
      "value": "AppGuard Enterprise antes de 6.7.100.1 crea un archivo temporal en un directorio con permisos inseguros. Los usuarios locales pueden obtener privilegios de SYSTEM porque una operación de reparación se basa en el directorio %TEMP% de un usuario sin privilegios"
    }
  ],
  "lastModified": "2026-06-17T04:09:31.270",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:blueplanet-works:appguard:*:*:*:*:enterprise:windows:*:*",
              "vulnerable": true,
              "matchCriteriaId": "88B46157-6D71-4C26-8365-DBCEE718B6A7",
              "versionEndExcluding": "6.7.100.1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}