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CVE-2021-40399

Estado: ModificadaAlta (7.8)—

An exploitable use-after-free vulnerability exists in WPS Spreadsheets ( ET ) as part of WPS Office, version 11.2.0.10351. A specially-crafted XLS file can cause a use-after-free condition, resulting in remote code execution. An attacker needs to provide a malformed file to the victim to trigger the 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)

WPS — WPS Office

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-40399",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2021-40399",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-04-15T18:14:34.826859Z"
        }
      }
    ],
    "cvssMetricV2": [
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        "cvssData": {
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Secondary",
        "source": "talos-cna@cisco.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
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          "confidentialityImpact": "HIGH"
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  },
  "affected": [
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      "affectedData": [
        {
          "vendor": "WPS",
          "product": "WPS Office",
          "versions": [
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              "status": "affected",
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            }
          ]
        }
      ]
    }
  ],
  "published": "2022-05-12T17:15:09.573",
  "references": [
    {
      "url": "https://security.wps.cn/notices/28",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "talos-cna@cisco.com"
    },
    {
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1412",
      "tags": [
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      "source": "talos-cna@cisco.com"
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1412",
      "tags": [
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      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "talos-cna@cisco.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An exploitable use-after-free vulnerability exists in WPS Spreadsheets ( ET ) as part of WPS Office, version 11.2.0.10351. A specially-crafted XLS file can cause a use-after-free condition, resulting in remote code execution. An attacker needs to provide a malformed file to the victim to trigger the vulnerability."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad explotable de uso de memoria previamente liberada en WPS Spreadsheets ( ET ) como parte de WPS Office, versión 11.2.0.10351. Un archivo XLS especialmente diseñado puede causar una condición de uso de memoria previamente liberada, resultando en una ejecución de código remota. Un atacante necesita proporcionar un archivo malformado a la víctima para desencadenar la vulnerabilidad"
    }
  ],
  "lastModified": "2026-06-17T04:06:51.850",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:wps:wps_office:11.2.0.10351:*:*:*:*:*:*:*",
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            }
          ],
          "operator": "OR"
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    }
  ],
  "sourceIdentifier": "talos-cna@cisco.com"
}