CVE-2009-1139

CVE-2009-1139 is a high-severity vulnerability in Microsoft Adam with a CVSS 2.0 base score of 7.8. Its EPSS exploit-prediction score of 39% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-399.

Key facts

Description

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."

Frequently asked questions

What is CVE-2009-1139?
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."
How severe is CVE-2009-1139?
CVE-2009-1139 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2009-1139 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 39% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-1139?
CVE-2009-1139 primarily affects Microsoft Adam. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-1139?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2009-1139 published?
CVE-2009-1139 was published on 2009-06-10 and last updated on 2026-06-16.

References

Affected products (6)

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