« Volver al listado

CVE-2021-26471

Estado: ModificadaCrítica (9.8)—

In VembuBDR before 4.2.0.1 and VembuOffsiteDR before 4.2.0.1, the http API located at /sgwebservice_o.php accepts a command argument. Using this command argument an unauthenticated attacker can execute arbitrary shell commands.

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 (2)

Vembu — BDR SuiteVembu — Offsite DR

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-26471",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/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": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve@mitre.org",
        "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
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "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": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-06-08T19:15:08.227",
  "references": [
    {
      "url": "https://csirt.divd.nl/2021/05/11/Vembu-zero-days/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://csirt.divd.nl/cases/DIVD-2020-00011/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://csirt.divd.nl/cves/CVE-2021-26471/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.wbsec.nl/vembu",
      "tags": [
        "Broken Link",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://csirt.divd.nl/2021/05/11/Vembu-zero-days/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://csirt.divd.nl/cases/DIVD-2020-00011/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://csirt.divd.nl/cves/CVE-2021-26471/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.wbsec.nl/vembu",
      "tags": [
        "Broken Link",
        "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": "In VembuBDR before 4.2.0.1 and VembuOffsiteDR before 4.2.0.1, the http API located at /sgwebservice_o.php accepts a command argument. Using this command argument an unauthenticated attacker can execute arbitrary shell commands."
    },
    {
      "lang": "es",
      "value": "En VembuBDR antes de la versión 4.2.0.1 y VembuOffsiteDR antes de la versión 4.2.0.1, la API http ubicada en /sgwebservice_o.php acepta un argumento de comando. Usando este argumento de comando un atacante no autenticado puede ejecutar comandos de shell arbitrarios"
    }
  ],
  "lastModified": "2026-06-17T03:43:25.917",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:vembu:bdr_suite:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D9F91BA2-195F-4A24-9403-724BD268CB56",
              "versionEndExcluding": "4.2.0.1"
            },
            {
              "criteria": "cpe:2.3:a:vembu:offsite_dr:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "04101E71-5807-4324-9992-358362D276E4",
              "versionEndExcluding": "4.2.0.1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}