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CVE-2021-28211

Estado: ModificadaMedia (6.7)—

A heap overflow in LzmaUefiDecompressGetInfo function in EDK II.

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 (1)

Tianocore — Edk2

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-28211",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.6,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.7,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 0.8
      }
    ]
  },
  "affected": [
    {
      "source": "infosec@edk2.groups.io",
      "affectedData": [
        {
          "vendor": "TianoCore",
          "product": "EDK II",
          "versions": [
            {
              "status": "affected",
              "version": "edk2-stable202008"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-06-11T16:15:12.503",
  "references": [
    {
      "url": "https://bugzilla.tianocore.org/show_bug.cgi?id=1816",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Patch",
        "Vendor Advisory"
      ],
      "source": "infosec@edk2.groups.io"
    },
    {
      "url": "https://bugzilla.tianocore.org/show_bug.cgi?id=1816",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "infosec@edk2.groups.io",
      "description": [
        {
          "lang": "en",
          "value": "CWE-122"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A heap overflow in LzmaUefiDecompressGetInfo function in EDK II."
    },
    {
      "lang": "es",
      "value": "Un desbordamiento de la pila en la función zmaUefiDecompressGetInfo en EDK II"
    }
  ],
  "lastModified": "2026-06-17T03:46:04.583",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:tianocore:edk2:202008:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1C45BEB6-1F89-4813-B2CF-90639F9CE525"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "infosec@edk2.groups.io"
}