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CVE-2021-21142

Estado: ModificadaCrítica (9.6)—

Un uso de la memoria previamente liberada en Payments en Google Chrome en Mac versiones anteriores a 88.0.4324.146, permitía que un atacante remoto pudiera llevar a cabo un escape del sandbox 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-2021-21142",
  "cveTags": [],
  "metrics": {
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        "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"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
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          "scope": "CHANGED",
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          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 6,
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  "affected": [
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      "affectedData": [
        {
          "vendor": "Google",
          "product": "Chrome",
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  "published": "2021-02-09T15:15:13.547",
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      "url": "https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop.html",
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        "Vendor Advisory"
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    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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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 Payments in Google Chrome on Mac prior to 88.0.4324.146 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page."
    },
    {
      "lang": "es",
      "value": "Un uso de la memoria previamente liberada en Payments en Google Chrome en Mac versiones anteriores a 88.0.4324.146, permitía que un atacante remoto pudiera llevar a cabo un escape del sandbox por medio de una página HTML diseñada"
    }
  ],
  "lastModified": "2026-06-17T03:34:54.180",
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}