CVE-2008-5112

Status: ModifiedMedium (5)—💥 Exploit

The LDAP server in Active Directory in Microsoft Windows 2000 SP4 and Server 2003 SP1 and SP2 responds differently to a failed bind attempt depending on whether the user account exists and is permitted to login, which allows remote attackers to enumerate valid usernames via a series of LDAP bind requests, as demonstrated by ldapuserenum.

CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N
Base score: 5

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 17%
Percentile among all scored CVEs: 97
Score date: 10/7/2026

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).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Published on Exploit-DB · Microsoft Active Directory LDAP Server - 'Username' Enumeration (11/14/2008)

Affected technologies (2)

Microsoft — Windows Microsoft — Windows 2000

CWEs

CWE-200

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2008-5112",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
        "cvssData": {
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          "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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  "published": "2008-11-17T23:30:00.517",
  "references": [
    {
      "url": "http://labs.portcullis.co.uk/application/ldapuserenum/",
      "source": "cve@mitre.org"
    },
    {
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "value": "CWE-200"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The LDAP server in Active Directory in Microsoft Windows 2000 SP4 and Server 2003 SP1 and SP2 responds differently to a failed bind attempt depending on whether the user account exists and is permitted to login, which allows remote attackers to enumerate valid usernames via a series of LDAP bind requests, as demonstrated by ldapuserenum."
    },
    {
      "lang": "es",
      "value": "El servidor LDAP en Active Directory en Microsoft Windows 2000 SP4 y Server 2003 SP1 y SP2 responde de forma diferente a un intento fallido de bind dependiendo de si la cuenta de usuario existe y está habilitada para abrir una sesión, que permite que los atacantes remotos enumerar nombres de usuario válidos a través de una serie de peticiones bind de LDAP, según lo demostrado por ldapuserenum."
    }
  ],
  "lastModified": "2026-06-16T22:59:16.520",
  "configurations": [
    {
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  "sourceIdentifier": "cve@mitre.org"
}