CVE-2009-1139

What it is

Memory leak in the LDAP service in Active Directory on Microsoft Windows 2000 SP4 and Server 2003 SP2, and Active Directory Application Mode (ADAM) on Windows XP SP2 and SP3 and Server 2003 SP2, allows remote attackers to cause a denial of service (memory consumption and service outage) via (1) LDAP or (2) LDAPS requests with unspecified OID filters, aka "Active Directory Memory Leak Vulnerability."

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of service disruption.

Exploit odds

39.1% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2009-03-25 00:00 UTC ReservedThe CVE id was reserved by its CNA
2. 2009-06-10 18:00 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-06-16 23:06 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 39.1% in the next 30 days (EPSS).
• Severity: 7.8 HIGH (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2009-06-10 18:00 UTC

Last modified

2026-06-16 23:06 UTC

Exploit probability

39.1% · EPSS, next 30 days

Weakness

CWE-399

Record status

Modified

Affected

• Microsoft Adam
• Microsoft Windows Server 2003
• Microsoft Windows 2000

Attack profile CVSS 2.0 · 7.8

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2009-1139.md and follow it. Check whether this project is affected by CVE-2009-1139. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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