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CVE-2021-40405

Estado: ModificadaMedia (6.5)—

A denial of service vulnerability exists in the cgiserver.cgi Upgrade API functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted HTTP request can lead to a reboot. An attacker can send an HTTP request 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)

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2021-40405",
  "cveTags": [],
  "metrics": {
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-04-15T18:18:52.869568Z"
        }
      }
    ],
    "cvssMetricV2": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:C",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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    "cvssMetricV30": [
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        "type": "Secondary",
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  },
  "affected": [
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      "affectedData": [
        {
          "vendor": "Reolink",
          "product": "RLC-410W",
          "versions": [
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            }
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        }
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  ],
  "published": "2022-04-14T20:15:08.937",
  "references": [
    {
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1422",
      "tags": [
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        "Third Party Advisory"
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      "source": "talos-cna@cisco.com"
    },
    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "talos-cna@cisco.com",
      "description": [
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          "value": "CWE-284"
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      "description": [
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          "value": "CWE-404"
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      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A denial of service vulnerability exists in the cgiserver.cgi Upgrade API functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted HTTP request can lead to a reboot. An attacker can send an HTTP request to trigger this vulnerability."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de denegación de servicio en la funcionalidad cgiserver.cgi Upgrade API de Reolink RLC-410W versión v3.0.0.136_20121102. Una petición HTTP especialmente diseñada puede conllevar a un reinicio. Un atacante puede enviar una petición HTTP para desencadenar esta vulnerabilidad"
    }
  ],
  "lastModified": "2026-06-17T04:06:52.540",
  "configurations": [
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  "sourceIdentifier": "talos-cna@cisco.com"
}