{"id":"CVE-2009-1138","aliases":["EUVD-2009-1139","GHSA-qppm-3wfg-wfc7"],"status":"published","title":"The LDAP service in Active Directory on Microsoft Windows 2000 SP4 does not properly free memory...","description":"The LDAP service in Active Directory on Microsoft Windows 2000 SP4 does not properly free memory for LDAP and LDAPS requests, which allows remote attackers to execute arbitrary code via a request that uses hexadecimal encoding, whose associated memory is not released, related to a \"DN AttributeValue,\" aka \"Active Directory Invalid Free Vulnerability.\"  NOTE: this issue is probably a memory leak.","severity":{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.39404,"percentile":0.9862,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-399"],"published":"2009-06-10T17:37:00Z","modified":"2026-06-16T23:06:35Z","products":[{"vendor":"microsoft","product":"windows_2000"}],"references":[{"url":"http://www.securityfocus.com/bid/35226","tags":["vdb-entry","x_refsource_BID","x_transferred","Patch"]},{"url":"http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=804","tags":["third-party-advisory","x_refsource_IDEFENSE","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6180","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-018","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"http://support.avaya.com/elmodocs2/security/ASA-2009-214.htm","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.securitytracker.com/id?1022349","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://www.vupen.com/english/advisories/2009/1537","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-160A.html","tags":["third-party-advisory","x_refsource_CERT","x_transferred","US Government Resource"]},{"url":"http://secunia.com/advisories/35355","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://osvdb.org/54937","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-1138"},{"url":"https://github.com/advisories/GHSA-qppm-3wfg-wfc7"}],"sources":{"cve":[{"id":"CVE-2009-1138","description":"The LDAP service in Active Directory on Microsoft Windows 2000 SP4 does not properly free memory for LDAP and LDAPS requests, which allows remote attackers to execute arbitrary code via a request that uses hexadecimal encoding, whose associated memory is not released, related to a \"DN AttributeValue,\" aka \"Active Directory Invalid Free Vulnerability.\"  NOTE: this issue is probably a memory leak.","status":"published","published":"2009-06-10T17:37:00Z","modified":"2024-08-07T05:04:47.97Z","updated_at":"2026-11-02T14:33:25.516454Z"}],"euvd":[{"id":"EUVD-2009-1139","description":"The LDAP service in Active Directory on Microsoft Windows 2000 SP4 does not properly free memory for LDAP and LDAPS requests, which allows remote attackers to execute arbitrary code via a request that uses hexadecimal encoding, whose associated memory is not released, related to a \"DN AttributeValue,\" aka \"Active Directory Invalid Free Vulnerability.\"  NOTE: this issue is probably a memory leak.","status":"published","published":"2009-06-10T17:37:00Z","modified":"2024-08-07T05:04:47Z","updated_at":"2026-11-03T01:39:22.935477Z"}],"ghsa":[{"id":"GHSA-qppm-3wfg-wfc7","title":"The LDAP service in Active Directory on Microsoft Windows 2000 SP4 does not properly free memory...","description":"The LDAP service in Active Directory on Microsoft Windows 2000 SP4 does not properly free memory for LDAP and LDAPS requests, which allows remote attackers to execute arbitrary code via a request that uses hexadecimal encoding, whose associated memory is not released, related to a \"DN AttributeValue,\" aka \"Active Directory Invalid Free Vulnerability.\"  NOTE: this issue is probably a memory leak.","status":"published","published":"2022-05-02T03:22:03Z","modified":"2023-01-31T05:07:01Z","updated_at":"2026-11-02T14:49:08.279119Z"}],"nvd":[{"id":"CVE-2009-1138","description":"The LDAP service in Active Directory on Microsoft Windows 2000 SP4 does not properly free memory for LDAP and LDAPS requests, which allows remote attackers to execute arbitrary code via a request that uses hexadecimal encoding, whose associated memory is not released, related to a \"DN AttributeValue,\" aka \"Active Directory Invalid Free Vulnerability.\"  NOTE: this issue is probably a memory leak.","status":"published","published":"2009-06-10T18:00:00.377Z","modified":"2026-06-16T23:06:35.307Z","cvss":[{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-399"],"updated_at":"2026-11-02T14:01:35.733785Z"}]}}