CVE-2009-1138 - CVE House
Back to Database
Status published Critical CVE-2009-1138

The LDAP service in Active Directory on Microsoft Windows 2000...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2009-1138

Credits & Attribution

No credits recorded in the NVD database.

References

More from microsoft

View All →
CVE-2025-25199
BCryptGenerateSymmetricKey memory leak
High 7.5
CVE-2024-47083
Power Platform Terraform Provider has Improper Masking of Secrets in Logs
High 8.8
CVE-2024-0590
Microsoft Clarity <= 0.9.3 - Cross-Site Request Forgery to Stored Cross-Site Scripting
Medium 6.1
CVE-2023-30846
typed-rest-client vulnerable to potential leak of authentication data to 3rd parties
Critical 9.1
CVE-2021-3339
ModernFlow before 1.3.00.208 does not constrain web-page access to members...
Medium 4.3

Affected Vendor

Affected Software

windows 2000
Vulnerable Versions:
Unknown

Timeline

Official Publish: June 10th, 2009
Last Modified: August 7th, 2024
Added to House: July 19th, 2026

CVSS Vectors

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.