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CVE-2021-35963

Estado: ModificadaCrítica (9.8)—

The specific parameter of upload function of the Orca HCM digital learning platform does not filter file format, which allows remote unauthenticated attackers to upload files containing malicious script to execute RCE attacks.

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)

Learningdigital — Orca HCM

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-35963",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 10,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/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": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "twcert@cert.org.tw",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "twcert@cert.org.tw",
      "affectedData": [
        {
          "vendor": "Learningdigital.com, Inc.",
          "product": "Orca HCM",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "10.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-07-19T12:15:08.323",
  "references": [
    {
      "url": "https://www.chtsecurity.com/news/ba7b3ae7-14f3-4970-b3f6-4d97d8c7ea25",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "twcert@cert.org.tw"
    },
    {
      "url": "https://www.twcert.org.tw/tw/cp-132-4923-d68e6-1.html",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "twcert@cert.org.tw"
    },
    {
      "url": "https://www.chtsecurity.com/news/ba7b3ae7-14f3-4970-b3f6-4d97d8c7ea25",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.twcert.org.tw/tw/cp-132-4923-d68e6-1.html",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "twcert@cert.org.tw",
      "description": [
        {
          "lang": "en",
          "value": "CWE-434"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The specific parameter of upload function of the Orca HCM digital learning platform does not filter file format, which allows remote unauthenticated attackers to upload files containing malicious script to execute RCE attacks."
    },
    {
      "lang": "es",
      "value": "El parámetro específico de la función upload de la plataforma de aprendizaje digital Orca HCM no filtra el formato de los archivos, lo que permite a atacantes remotos no autenticados cargar archivos conteniendo scripts maliciosos para ejecutar ataques RCE"
    }
  ],
  "lastModified": "2026-06-17T03:58:06.830",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:learningdigital:orca_hcm:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5DD0FF13-4AF2-4BE9-AA93-428611BF30CE",
              "versionEndIncluding": "10.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "twcert@cert.org.tw"
}