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CVE-2021-40423

Estado: ModificadaAlta (7.5)—

A denial of service vulnerability exists in the cgiserver.cgi API command parser functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted series of HTTP requests can lead to denial of service. 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)

Reolink — Rlc-410w Firmware

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2021-40423",
  "cveTags": [],
  "metrics": {
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "poc"
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            {
              "automatable": "yes"
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2025-04-15T18:24:02.067448Z"
        }
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    "cvssMetricV2": [
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        "cvssData": {
          "version": "2.0",
          "baseScore": 7.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "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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  "published": "2022-01-28T20:15:12.090",
  "references": [
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      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2022-1432",
      "tags": [
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  "vulnStatus": "Modified",
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      "source": "talos-cna@cisco.com",
      "description": [
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          "value": "CWE-20"
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  ],
  "descriptions": [
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      "value": "A denial of service vulnerability exists in the cgiserver.cgi API command parser functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted series of HTTP requests can lead to denial of service. An attacker can send an HTTP request to trigger this vulnerability."
    },
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      "lang": "es",
      "value": "Se presenta una vulnerabilidad de denegación de servicio en la funcionalidad API command parser del archivo cgiserver.cgi de Reolink RLC-410W versión v3.0.0.136_20121102. Una serie de peticiones HTTP especialmente diseñadas puede conllevar a una denegación de servicio. Un atacante puede enviar una petición HTTP para desencadenar esta vulnerabilidad"
    }
  ],
  "lastModified": "2026-06-17T04:06:54.470",
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}