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CVE-2021-21191

Estado: ModificadaAlta (8.8)—

Un uso de la memoria previamente liberada en WebRTC en Google Chrome versiones anteriores a 89.0.4389.90, permitía a un atacante remoto explotar potencialmente una corrupción de la pila 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 (3)

Debian — Debian LinuxFedoraproject — FedoraGoogle — Chrome

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-21191",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
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          "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"
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        "acInsufInfo": false,
        "impactScore": 6.4,
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        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
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          "userInteraction": "REQUIRED",
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      "affectedData": [
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          "vendor": "Google",
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  "published": "2021-03-16T15:15:12.953",
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use after free in WebRTC in Google Chrome prior to 89.0.4389.90 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 WebRTC en Google Chrome versiones anteriores a 89.0.4389.90, permitía a un atacante remoto explotar potencialmente una corrupción de la pila por medio de una página HTML diseñada"
    }
  ],
  "lastModified": "2026-06-17T03:35:00.253",
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}