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CVE-2021-45464

Estado: ModificadaAlta (8.8)—

kvmtool through 39181fc allows an out-of-bounds write, related to virtio/balloon.c and virtio/pci.c. This allows a guest OS user to execute arbitrary code on the host machine.

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)

Kvmtool Project — Kvmtool

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-45464",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-45464",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-02-06T16:04:30.062460Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "source": "nvd@nist.gov",
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          "baseScore": 8.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 2
      },
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "CHANGED",
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          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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          "privilegesRequired": "LOW",
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        "exploitabilityScore": 2
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  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
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              "status": "affected",
              "version": "n/a"
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  "published": "2023-04-15T23:15:13.760",
  "references": [
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      "url": "https://cdn.discordapp.com/attachments/921419715170164776/921882173517230100/exploit.c",
      "tags": [
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      "url": "https://cdn.discordapp.com/attachments/921419715170164776/921882173517230100/exploit.c",
      "tags": [
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      "tags": [
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    },
    {
      "url": "https://www.kalmarunionen.dk/writeups/2021/hxp-2021/lkvm/",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
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      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
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    {
      "type": "Secondary",
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          "lang": "en",
          "value": "CWE-787"
        }
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "kvmtool through 39181fc allows an out-of-bounds write, related to virtio/balloon.c and virtio/pci.c. This allows a guest OS user to execute arbitrary code on the host machine."
    }
  ],
  "lastModified": "2026-06-17T04:13:25.017",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:kvmtool_project:kvmtool:-:*:*:*:*:*:*:*",
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            }
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          "operator": "OR"
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  ],
  "sourceIdentifier": "cve@mitre.org"
}