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Vulnerability record · CVE-2013-3868 · published 11 September 2013

CVE-2013-3868: Microsoft active directory lightweight directory service improper input validation vulnerability

Microsoft · Active Directory Lightweight Directory Service

Microsoft Active Directory Lightweight Directory Service (AD LDS) on Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, and Windows 8 and Active Directory Services on Windows Server 2008 SP2 and R2 SP1 and Server 2012 allow remote attackers to cause a denial of service (LDAP directory-service outage) via a crafted LDAP query, aka "Remote Anonymous DoS Vulnerability."

5.0 CVSS 2.0 Medium EPSS 37% · top 1.5% CWE-20 · Improper input validation
5.0CVSS 2.0 base score
37%EPSS exploitation probability, 30 days
NoNot in CISA KEV
6Affected product versions listed by NVD
4References
16 Jun 2026Last modified by NVD

Description

Microsoft Active Directory Lightweight Directory Service (AD LDS) on Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, and Windows 8 and Active Directory Services on Windows Server 2008 SP2 and R2 SP1 and Server 2012 allow remote attackers to cause a denial of service (LDAP directory-service outage) via a crafted LDAP query, aka "Remote Anonymous DoS Vulnerability."

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

Affected products

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

References

LinkTags
http://www.us-cert.gov/ncas/alerts/TA13-253A US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-079
http://www.us-cert.gov/ncas/alerts/TA13-253A US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-079

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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-2013-3868), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.