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CVE-2021-25631

Estado: ModificadaAlta (8.8)—

In the LibreOffice 7-1 series in versions prior to 7.1.2, and in the 7-0 series in versions prior to 7.0.5, the denylist can be circumvented by manipulating the link so it doesn't match the denylist but results in ShellExecute attempting to launch an executable type.

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)

Libreoffice — Libreoffice

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-25631",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 9.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@documentfoundation.org",
      "affectedData": [
        {
          "vendor": "The Document Foundation",
          "product": "LibreOffice",
          "versions": [
            {
              "status": "affected",
              "version": "7.1",
              "lessThan": "7.1.2",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "7.0",
              "lessThan": "7.0.5",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "Windows"
          ]
        }
      ]
    }
  ],
  "published": "2021-05-03T12:15:07.417",
  "references": [
    {
      "url": "https://positive.security/blog/url-open-rce#open-libreoffice",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "security@documentfoundation.org"
    },
    {
      "url": "https://www.libreoffice.org/about-us/security/advisories/cve-2021-25631/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@documentfoundation.org"
    },
    {
      "url": "https://positive.security/blog/url-open-rce#open-libreoffice",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.libreoffice.org/about-us/security/advisories/cve-2021-25631/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@documentfoundation.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-184"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the LibreOffice 7-1 series in versions prior to 7.1.2, and in the 7-0 series in versions prior to 7.0.5, the denylist can be circumvented by manipulating the link so it doesn't match the denylist but results in ShellExecute attempting to launch an executable type."
    },
    {
      "lang": "es",
      "value": "En la serie LibreOffice 7-1 en versiones anteriores a 7.1.2, y en la serie 7-0 en versiones anteriores a 7.0.5, la denylist puede ser omitida al manipular el enlace para que no coincida con la denylist pero resulte en ShellExecute intentando iniciar un tipo ejecutable."
    }
  ],
  "lastModified": "2026-06-17T03:42:15.093",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "37496EEC-C63C-46DE-92F2-A29DECF95EE2",
              "versionEndExcluding": "7.0.5",
              "versionStartIncluding": "7.0.0"
            },
            {
              "criteria": "cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BA884385-2527-4F68-9FD5-67ECD9A89F42",
              "versionEndExcluding": "7.1.2",
              "versionStartIncluding": "7.1.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@documentfoundation.org"
}