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CVE-1999-0994

Estado: ModificadaMedia (5)—

Windows NT with SYSKEY reuses the keystream that is used for encrypting SAM password hashes, allowing an attacker to crack passwords.

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)

Microsoft — Windows NT

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-1999-0994",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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  "affected": [
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      "affectedData": [
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          "vendor": "n/a",
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              "status": "affected",
              "version": "n/a"
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  ],
  "published": "1999-12-16T05:00:00.000",
  "references": [
    {
      "url": "http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ248183",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/873",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-056",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ248183",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/873",
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    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-255"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Windows NT with SYSKEY reuses the keystream that is used for encrypting SAM password hashes, allowing an attacker to crack passwords."
    }
  ],
  "lastModified": "2026-06-16T21:49:28.960",
  "configurations": [
    {
      "nodes": [
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          "negate": false,
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}