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CVE-2026-20825

Estado: AnalizadaMedia (4.4)—

Improper access control in Windows Hyper-V allows an authorized attacker to disclose information locally.

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 (10)

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-20825",
  "cveTags": [],
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        "ssvcData": {
          "id": "CVE-2026-20825",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-13T19:38:03.387270Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "secure@microsoft.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.4,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 0.8
      }
    ]
  },
  "affected": [
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      "source": "secure@microsoft.com",
      "affectedData": [
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          "product": "Windows Server 2019 (Server Core installation)",
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          "platforms": [
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        {
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          "product": "Windows Server 2022",
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          "product": "Windows Server 2022, 23H2 Edition (Server Core installation)",
          "versions": [
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              "lessThan": "10.0.25398.2092",
              "versionType": "custom"
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          ],
          "platforms": [
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        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server 2025",
          "versions": [
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              "version": "10.0.26100.0",
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              "versionType": "custom"
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          "product": "Windows Server 2025 (Server Core installation)",
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              "version": "10.0.26100.0",
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              "versionType": "custom"
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          ],
          "platforms": [
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  ],
  "published": "2026-01-13T18:16:09.990",
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20825",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secure@microsoft.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper access control in Windows Hyper-V allows an authorized attacker to disclose information locally."
    },
    {
      "lang": "es",
      "value": "Control de acceso inadecuado en Windows Hyper-V permite a un atacante autorizado divulgar información localmente."
    }
  ],
  "lastModified": "2026-07-30T21:16:59.527",
  "configurations": [
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}