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CVE-2021-21779

Estado: ModificadaAlta (8.8)—

A use-after-free vulnerability exists in the way Webkit’s GraphicsContext handles certain events in WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. A victim must be tricked into visiting a malicious web page to trigger this 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 (3)

Debian — Debian LinuxFedoraproject — FedoraWebkitgtk — Webkitgtk

CWE

Referencias

JSON original (NVD)

Mostrar
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          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
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  "published": "2021-07-08T12:15:09.903",
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      "value": "A use-after-free vulnerability exists in the way Webkit’s GraphicsContext handles certain events in WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de uso de memoria previamente liberada en la forma en que el GraphicsContext de Webkit maneja determinados eventos en WebKitGTK versión 2.30.4. Una página web especialmente diseñada puede conllevar a un potencial filtrado de información y una mayor corrupción de memoria. Una víctima debe ser engañada para visitar una página web maliciosa para desencadenar esta vulnerabilidad"
    }
  ],
  "lastModified": "2026-06-17T03:36:06.207",
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