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CVE-2018-8549

Status: ModifiedMedium (5.5)—

A security feature bypass exists when Windows incorrectly validates kernel driver signatures, aka "Windows Security Feature Bypass Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2012, Windows Server 2019, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (6)

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2018-8549",
  "cveTags": [],
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          "baseScore": 2.1,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
        "impactScore": 2.9,
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        "obtainAllPrivilege": false,
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          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
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        "impactScore": 3.6,
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  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
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          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
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  "published": "2018-11-14T01:29:01.083",
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      "tags": [
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      ],
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    },
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      "source": "secure@microsoft.com"
    },
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      "source": "secure@microsoft.com"
    },
    {
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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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      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "NVD-CWE-noinfo"
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  "descriptions": [
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      "value": "A security feature bypass exists when Windows incorrectly validates kernel driver signatures, aka \"Windows Security Feature Bypass Vulnerability.\" This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2012, Windows Server 2019, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers."
    },
    {
      "lang": "es",
      "value": "Existe una omisión de la característica de seguridad cuando Windows valida incorrectamente las firmas del controlador del kernel. Esto también se conoce como \"Windows Security Feature Bypass Vulnerability\". Esto afecta a Windows Server 2012 R2, Windows RT 8.1, Windows Server 2012, Windows Server 2019, Windows Server 2016, Windows 8.1, Windows 10 y Windows 10 Servers."
    }
  ],
  "lastModified": "2026-06-17T02:05:04.760",
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}