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CVE-2021-33592

Estado: ModificadaCrítica (9.8)—

NAVER Toolbar before 4.0.30.323 allows remote attackers to execute arbitrary code via a crafted upgrade.xml file. Special characters in filename parameter can be the cause of bypassing code signing check function.

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)

Naver — Toolbar

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-33592",
  "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,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@navercorp.com",
      "affectedData": [
        {
          "vendor": "NAVER",
          "product": "NAVER Toolbar",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "4.0.30.323"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-07-19T06:15:06.903",
  "references": [
    {
      "url": "https://cve.naver.com/detail/cve-2021-33592",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@navercorp.com"
    },
    {
      "url": "https://cve.naver.com/detail/cve-2021-33592",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cve@navercorp.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "NAVER Toolbar before 4.0.30.323 allows remote attackers to execute arbitrary code via a crafted upgrade.xml file. Special characters in filename parameter can be the cause of bypassing code signing check function."
    },
    {
      "lang": "es",
      "value": "NAVER Toolbar versiones anteriores a 4.0.30.323, permite a atacantes remotos ejecutar código arbitrario por medio de un archivo upgrade.xml diseñado. Los caracteres especiales en el parámetro  filename pueden ser la causa de la omisión de la función de comprobación de la firma del código"
    }
  ],
  "lastModified": "2026-06-17T03:54:50.467",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:naver:toolbar:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "010608DB-28F5-4CE9-9494-B3D2196ABA16",
              "versionEndExcluding": "4.0.30.323"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@navercorp.com"
}