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CVE-2021-33721

Estado: ModificadaAlta (7.2)—

A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2). The affected application incorrectly neutralizes special elements when creating batch operations which could lead to command injection. An authenticated remote attacker with administrative privileges could exploit this vulnerability to execute arbitrary code on the system with system privileges.

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)

Siemens — Sinec Network Management System

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-33721",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 9,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
          "authentication": "SINGLE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.2,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.2
      }
    ]
  },
  "affected": [
    {
      "source": "productcert@siemens.com",
      "affectedData": [
        {
          "vendor": "Siemens",
          "product": "SINEC NMS",
          "versions": [
            {
              "status": "affected",
              "version": "All versions < V1.0 SP2"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-08-10T11:15:09.120",
  "references": [
    {
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-756744.pdf",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "productcert@siemens.com"
    },
    {
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-756744.pdf",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "productcert@siemens.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2). The affected application incorrectly neutralizes special elements when creating batch operations which could lead to command injection. An authenticated remote attacker with administrative privileges could exploit this vulnerability to execute arbitrary code on the system with system privileges."
    },
    {
      "lang": "es",
      "value": "Se ha identificado una vulnerabilidad en SINEC NMS (Todas las versiones anteriores a V1.0 SP2). La aplicación afectada neutraliza incorrectamente los elementos especiales cuando crea operaciones por lotes, lo que podría conllevar a una inyección de comandos. Un atacante remoto autenticado con privilegios administrativos podría explotar esta vulnerabilidad para ejecutar código arbitrario en el sistema con privilegios del sistema"
    }
  ],
  "lastModified": "2026-06-17T03:55:06.380",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:siemens:sinec_network_management_system:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EBC16A76-8936-4D39-B6E4-7D23D361411B",
              "versionEndExcluding": "1.0"
            },
            {
              "criteria": "cpe:2.3:a:siemens:sinec_network_management_system:1.0:-:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F7955F92-E805-4C9C-A749-3FF264B16E31"
            },
            {
              "criteria": "cpe:2.3:a:siemens:sinec_network_management_system:1.0:sp1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3C739D6C-6134-4095-A12C-BA3BC67DE416"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "productcert@siemens.com"
}