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CVE-2011-0039

Status: ModifiedHigh (7.2)—

The Local Security Authority Subsystem Service (LSASS) in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 does not properly process authentication requests, which allows local users to gain privileges via a request with a crafted length, aka "LSASS Length Validation Vulnerability."

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 (2)

Microsoft — Windows 2003 ServerMicrosoft — Windows XP

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2011-0039",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.2,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2011-02-09T01:00:08.070",
  "references": [
    {
      "url": "http://secunia.com/advisories/43253",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/46152",
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.securitytracker.com/id?1025049",
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2011/0327",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-014",
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12537",
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://secunia.com/advisories/43253",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/46152",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id?1025049",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2011/0327",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-014",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12537",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Local Security Authority Subsystem Service (LSASS) in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 does not properly process authentication requests, which allows local users to gain privileges via a request with a crafted length, aka \"LSASS Length Validation Vulnerability.\""
    },
    {
      "lang": "es",
      "value": "Local Security Authority Subsystem Service (LSASS) en Microsoft Windows XP SP2 y SP3 y Server 2003 SP2 no procesa correctamente las solicitudes de autenticación, lo que permite a usuarios locales conseguir privilegios a través de una solicitud con una longitud manipulada, también conocido como \"Vulnerabilidad de validación de longitud LSASS.\""
    }
  ],
  "lastModified": "2026-06-16T23:26:40.430",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2978BF86-5A1A-438E-B81F-F360D0E30C9C"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows_2003_server:*:sp2:itanium:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F7EFB032-47F4-4497-B16B-CB9126EAC9DF"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows_2003_server:*:sp2:x64:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6881476D-81A2-4DFD-AC77-82A8D08A0568"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows_xp:*:sp3:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CE477A73-4EE4-41E9-8694-5A3D5DC88656"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows_xp:-:sp2:x64:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FFAC3F90-77BF-4F56-A89B-8A3D2D1FC6D6"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@microsoft.com"
}