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Vulnerability record · CVE-2009-1928 · published 11 November 2009

CVE-2009-1928: Microsoft windows 2000 vulnerability

Microsoft · Windows 2000

Stack consumption vulnerability in the LDAP service in Active Directory on Microsoft Windows 2000 SP4, Server 2003 SP2, and Server 2008 Gold and SP2; Active Directory Application Mode (ADAM) on Windows XP SP2 and SP3 and Server 2003 SP2; and Active Directory Lightweight Directory Service (AD LDS) on Windows Server 2008 Gold and SP2 allows remote attackers to cause a denial of service (system hang) via a malformed (1) LDAP or (2) LDAPS request, aka "LSASS Recursive Stack Overflow Vulnerability."

7.8 CVSS 2.0 High EPSS 30% · top 1.8% CWE-399 · CWE-399
7.8CVSS 2.0 base score
30%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
6References
16 Jun 2026Last modified by NVD

Description

Stack consumption vulnerability in the LDAP service in Active Directory on Microsoft Windows 2000 SP4, Server 2003 SP2, and Server 2008 Gold and SP2; Active Directory Application Mode (ADAM) on Windows XP SP2 and SP3 and Server 2003 SP2; and Active Directory Lightweight Directory Service (AD LDS) on Windows Server 2008 Gold and SP2 allows remote attackers to cause a denial of service (system hang) via a malformed (1) LDAP or (2) LDAPS request, aka "LSASS Recursive Stack Overflow Vulnerability."

AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.us-cert.gov/cas/techalerts/TA09-314A.html US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-066
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5890
http://www.us-cert.gov/cas/techalerts/TA09-314A.html US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-066
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5890

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2009-1928), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.