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CVE-2021-21145

Estado: ModificadaAlta (8.8)—

Un uso de la memoria previamente liberada en Fonts en Google Chrome versiones anteriores a 88.0.4324.146, permitía a un atacante remoto explotar una corrupción de la memoria por medio de una página HTML diseñada

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 (2)

Fedoraproject — FedoraGoogle — Chrome

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-21145",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
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          "version": "2.0",
          "baseScore": 6.8,
          "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
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          "version": "3.1",
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          "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",
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  "affected": [
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      "affectedData": [
        {
          "vendor": "Google",
          "product": "Chrome",
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  "published": "2021-02-09T15:15:13.703",
  "references": [
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      "url": "https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop.html",
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        "Release Notes",
        "Vendor Advisory"
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      "url": "https://crbug.com/1154965",
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    },
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use after free in Fonts in Google Chrome prior to 88.0.4324.146 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page."
    },
    {
      "lang": "es",
      "value": "Un uso de la memoria previamente liberada en Fonts en Google Chrome versiones anteriores a 88.0.4324.146, permitía a un atacante remoto explotar una corrupción de la memoria por medio de una página HTML diseñada"
    }
  ],
  "lastModified": "2026-06-17T03:34:54.520",
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}