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CVE-2021-30550

Estado: ModificadaAlta (8.8)—

Un uso de la memoria previamente liberada en Accessibility en Google Chrome versiones anteriores a 91.0.4472.101, permitía a un atacante convencer a un usuario de instalar una extensión maliciosa explotar potencialmente la 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 (2)

Fedoraproject — FedoraGoogle — Chrome

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-30550",
  "cveTags": [],
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          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
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        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
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  "affected": [
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      "affectedData": [
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-416"
        }
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  "descriptions": [
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      "lang": "en",
      "value": "Use after free in Accessibility in Google Chrome prior to 91.0.4472.101 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page."
    },
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      "value": "Un uso de la memoria previamente liberada en Accessibility en Google Chrome versiones anteriores a 91.0.4472.101, permitía a un atacante convencer a un usuario de instalar una extensión maliciosa explotar potencialmente la corrupción de la pila por medio de una página HTML diseñada"
    }
  ],
  "lastModified": "2026-06-17T03:50:26.667",
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}