« Back to list

CVE-2007-2999

Status: ModifiedLow (1.8)—

Microsoft Windows Server 2003, when time restrictions are in effect for user accounts, generates different error messages for failed login attempts with a valid user name than for those with an invalid user name, which allows context-dependent attackers to determine valid Active Directory account names.

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 (1)

Microsoft — Windows 2003 Server

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2007-2999",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 1.8,
          "accessVector": "ADJACENT_NETWORK",
          "vectorString": "AV:A/AC:H/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.2,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2007-06-04T17:30:00.000",
  "references": [
    {
      "url": "http://osvdb.org/36138",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/25457",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.notsosecure.com/folder2/2007/05/27/logon-time-restrictions-in-a-domain-in-windows-server-2003-allows-username-enumeration/",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/24248",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://osvdb.org/36138",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/25457",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.notsosecure.com/folder2/2007/05/27/logon-time-restrictions-in-a-domain-in-windows-server-2003-allows-username-enumeration/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/24248",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft Windows Server 2003, when time restrictions are in effect for user accounts, generates different error messages for failed login attempts with a valid user name than for those with an invalid user name, which allows context-dependent attackers to determine valid Active Directory account names."
    },
    {
      "lang": "es",
      "value": "Microsoft Windows Server 2003, cuando las restricciones de tiempo están en efecto para las cuentas del usuario, genera diversos mensajes de error para las tentativas falladas de conexión con un nombre válido de usuario que para aquellos que tengan un nombre inválido de usuario, permite que los atacantes dependientes del contexto determinen nombres de cuenta activos válidos del directorio."
    }
  ],
  "lastModified": "2026-06-16T22:40:51.620",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:microsoft:windows_2003_server:gold:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B058588A-88F3-4789-8EA9-0D37447B08CA"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows_2003_server:sp1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "644E2E89-F3E3-4383-B460-424D724EE62F"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows_2003_server:sp2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "377F7D0C-6B44-4B90-BF90-DAF959880C6D"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}