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CVE-2021-20640

Estado: ModificadaMedia (6.8)—

Una vulnerabilidad de desbordamiento del búfer en LOGITEC LAN-W300N/PGRB, permite a un atacante con privilegios administrativos ejecutar un comando arbitrario del sistema operativo por medio de vectores no especificados

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)

Logitech — Lan-w300n/pgrb Firmware

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-20640",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.7,
          "accessVector": "ADJACENT_NETWORK",
          "vectorString": "AV:A/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": 5.1,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.8,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:A/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": 0.9
      }
    ]
  },
  "affected": [
    {
      "source": "vultures@jpcert.or.jp",
      "affectedData": [
        {
          "vendor": "LOGITEC CORPORATION",
          "product": "LAN-W300N/PGRB",
          "versions": [
            {
              "status": "affected",
              "version": "LAN-W300N/PGRB"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-02-12T07:15:14.810",
  "references": [
    {
      "url": "https://jvn.jp/en/jp/JVN96783542/index.html",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "vultures@jpcert.or.jp"
    },
    {
      "url": "https://lists.apache.org/thread.html/rc1778b38e74b5b6142414d57623bd55b023a72361f422836782fca3c%40%3Cdev.tomcat.apache.org%3E",
      "source": "vultures@jpcert.or.jp"
    },
    {
      "url": "https://www.elecom.co.jp/news/security/20210126-01/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "vultures@jpcert.or.jp"
    },
    {
      "url": "https://jvn.jp/en/jp/JVN96783542/index.html",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.apache.org/thread.html/rc1778b38e74b5b6142414d57623bd55b023a72361f422836782fca3c%40%3Cdev.tomcat.apache.org%3E",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.elecom.co.jp/news/security/20210126-01/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Buffer overflow vulnerability in LOGITEC LAN-W300N/PGRB allows an attacker with administrative privilege to execute an arbitrary OS command via unspecified vectors."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de desbordamiento del búfer en LOGITEC LAN-W300N/PGRB, permite a un atacante con privilegios administrativos ejecutar un comando arbitrario del sistema operativo por medio de vectores no especificados"
    }
  ],
  "lastModified": "2026-06-17T03:34:10.167",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:logitech:lan-w300n\\/pgrb_firmware:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7D0EE692-C74D-4EB2-8086-AEF268E3A703"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:logitech:lan-w300n\\/pgrb:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "5FD99F41-12B6-4412-8207-5AE69F739B26"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "vultures@jpcert.or.jp"
}