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CVE-2021-35249

Estado: ModificadaMedia (4.3)—

This broken access control vulnerability pertains specifically to a domain admin who can access configuration & user data of other domains which they should not have access to. Please note the admin is unable to modify the data (read only operation). This UAC issue leads to a data leak to unauthorized users for a domain, with no log of them accessing the data unless they attempt to modify it. This read-only activity is logged to the original domain and does not specify which domain was accessed.

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)

Solarwinds — Serv-u

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-35249",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@solarwinds.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@solarwinds.com",
      "affectedData": [
        {
          "vendor": "SolarWinds",
          "product": "Serv-U",
          "versions": [
            {
              "status": "affected",
              "version": "15.3 and previous versions",
              "lessThan": "15.3.1",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-05-17T20:15:07.997",
  "references": [
    {
      "url": "https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-3-1_release_notes.htm",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "psirt@solarwinds.com"
    },
    {
      "url": "https://www.solarwinds.com/trust-center/security-advisories/CVE-2021-35249",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@solarwinds.com"
    },
    {
      "url": "https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-3-1_release_notes.htm",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.solarwinds.com/trust-center/security-advisories/CVE-2021-35249",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@solarwinds.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "This broken access control vulnerability pertains specifically to a domain admin who can access configuration & user data of other domains which they should not have access to. Please note the admin is unable to modify the data (read only operation). This UAC issue leads to a data leak to unauthorized users for a domain, with no log of them accessing the data unless they attempt to modify it. This read-only activity is logged to the original domain and does not specify which domain was accessed."
    },
    {
      "lang": "es",
      "value": "Esta vulnerabilidad de control de acceso roto es referida específicamente a un administrador de dominio que puede acceder a los datos de configuración y de usuario de otros dominios a los que no debería tener acceso. Tenga en cuenta que el administrador no puede modificar los datos (operación de sólo lectura). Este problema de UAC conlleva a un filtrado de datos a usuarios no autorizados de un dominio, sin que sea registrado su acceso a los datos a menos que intenten modificarlos. Esta actividad de sólo lectura es registrada en el dominio original y no especifica a qué dominio ha sido accedido"
    }
  ],
  "lastModified": "2026-06-17T03:57:23.123",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:solarwinds:serv-u:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "340F413D-1CEE-4583-A26B-FDF0A8E30812",
              "versionEndExcluding": "15.3.1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@solarwinds.com"
}