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CVE-2021-4055

Estado: ModificadaAlta (8.8)—

Un desbordamiento del búfer de la pila en extensions en Google Chrome versiones anteriores a 96.0.4664.93, permitía a un atacante que convenciera a un usuario de instalar una extensión maliciosa aprovechar una corrupción de la pila por medio de una extensión de Chrome 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)

Mostrar
{
  "id": "CVE-2021-4055",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "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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          "scope": "UNCHANGED",
          "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",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "chrome-cve-admin@google.com",
      "affectedData": [
        {
          "vendor": "Google",
          "product": "Chrome",
          "versions": [
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              "status": "affected",
              "version": "unspecified",
              "lessThan": "96.0.4664.93",
              "versionType": "custom"
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  "published": "2021-12-23T01:15:08.747",
  "references": [
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      "url": "https://chromereleases.googleblog.com/2021/12/stable-channel-update-for-desktop.html",
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        "Vendor Advisory"
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      "source": "chrome-cve-admin@google.com"
    },
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      "tags": [
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    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3W46HRT2UVHWSLZB6JZHQF6JNQWKV744/",
      "source": "chrome-cve-admin@google.com"
    },
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      "url": "https://www.debian.org/security/2022/dsa-5046",
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    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
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      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Heap buffer overflow in extensions in Google Chrome prior to 96.0.4664.93 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension."
    },
    {
      "lang": "es",
      "value": "Un desbordamiento del búfer de la pila en extensions en Google Chrome versiones anteriores a 96.0.4664.93, permitía a un atacante que convenciera a un usuario de instalar una extensión maliciosa aprovechar una corrupción de la pila por medio de una extensión de Chrome diseñada"
    }
  ],
  "lastModified": "2026-06-17T04:18:57.920",
  "configurations": [
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              "vulnerable": true,
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              "versionEndExcluding": "96.0.4664.93"
            }
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  "sourceIdentifier": "chrome-cve-admin@google.com"
}