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CVE-2021-21913

Estado: ModificadaCrítica (9.8)—

An information disclosure vulnerability exists in the WiFi Smart Mesh functionality of D-LINK DIR-3040 1.13B03. A specially-crafted network request can lead to command execution. An attacker can connect to the MQTT service to trigger this vulnerability.

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)

Dlink — Dir-3040 Firmware

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-21913",
  "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,
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  "affected": [
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      "affectedData": [
        {
          "vendor": "n/a",
          "product": "D-Link",
          "versions": [
            {
              "status": "affected",
              "version": "D-LINK DIR-3040 1.13B03"
            }
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        }
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  ],
  "published": "2021-09-23T15:15:07.527",
  "references": [
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      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1361",
      "tags": [
        "Exploit",
        "Third Party Advisory"
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      "source": "talos-cna@cisco.com"
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    {
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      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "talos-cna@cisco.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-798"
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      "source": "nvd@nist.gov",
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          "lang": "en",
          "value": "CWE-798"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An information disclosure vulnerability exists in the WiFi Smart Mesh functionality of D-LINK DIR-3040 1.13B03. A specially-crafted network request can lead to command execution. An attacker can connect to the MQTT service to trigger this vulnerability."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de divulgación de información en la funcionalidad WiFi Smart Mesh de D-LINK DIR-3040 versión 1.13B03. Una petición de red especialmente diseñada puede conllevar a una ejecución de un comando. Un atacante puede conectarse al servicio MQTT para desencadenar esta vulnerabilidad"
    }
  ],
  "lastModified": "2026-06-17T03:36:21.030",
  "configurations": [
    {
      "nodes": [
        {
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  "sourceIdentifier": "talos-cna@cisco.com"
}