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CVE-2021-21878

Estado: ModificadaMedia (4.9)—

A local file inclusion vulnerability exists in the Web Manager Applications and FsBrowse functionality of Lantronix PremierWave 2050 8.9.0.0R4. A specially-crafted series of HTTP requests can lead to local file inclusion. An attacker can make a series of authenticated HTTP requests 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)

Lantronix — Premierwave 2050 Firmware

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-21878",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:C/I:N/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
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        "type": "Secondary",
        "source": "talos-cna@cisco.com",
        "cvssData": {
          "scope": "UNCHANGED",
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          "baseScore": 4.9,
          "attackVector": "NETWORK",
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          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
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          "availabilityImpact": "NONE",
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          "confidentialityImpact": "HIGH"
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        "exploitabilityScore": 1.2
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        "type": "Primary",
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        "impactScore": 3.6,
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  },
  "affected": [
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      "source": "talos-cna@cisco.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "Lantronix",
          "versions": [
            {
              "status": "affected",
              "version": "Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU)"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-12-22T19:15:08.920",
  "references": [
    {
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1322",
      "tags": [
        "Exploit",
        "Third Party Advisory"
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      "source": "talos-cna@cisco.com"
    },
    {
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1322",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "talos-cna@cisco.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-668"
        }
      ]
    },
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      "description": [
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          "lang": "en",
          "value": "CWE-668"
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      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A local file inclusion vulnerability exists in the Web Manager Applications and FsBrowse functionality of Lantronix PremierWave 2050 8.9.0.0R4. A specially-crafted series of HTTP requests can lead to local file inclusion. An attacker can make a series of authenticated HTTP requests to trigger this vulnerability."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de inclusión de archivos locales en la funcionalidad Applications and FsBrowse del Administrador Web de Lantronix PremierWave versión 2050 8.9.0.0R4. Una serie de peticiones HTTP especialmente diseñadas puede conllevar a una inclusión de archivos locales. Un atacante puede realizar una serie de peticiones HTTP autenticadas para desencadenar esta vulnerabilidad"
    }
  ],
  "lastModified": "2026-06-17T03:36:17.047",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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  ],
  "sourceIdentifier": "talos-cna@cisco.com"
}