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Vulnerability record · CVE-2009-4440 · published 28 December 2009

CVE-2009-4440: Sun java system directory server race condition vulnerability

Sun · Java System Directory Server

Directory Proxy Server (DPS) in Sun Java System Directory Server Enterprise Edition 6.0 through 6.3.1 does not properly handle multiple client connections within a short time window, which allows remote attackers to hijack the backend connection of an authenticated user, and obtain the privileges of this user, by making a client connection in opportunistic circumstances, related to "long binds," aka Bug Ids 6828462 and 6823593.

6.8 CVSS 2.0 Medium EPSS 1.6% · top 25.1% CWE-362 · Race condition
6.8CVSS 2.0 base score
1.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
12References
16 Jun 2026Last modified by NVD

Description

Directory Proxy Server (DPS) in Sun Java System Directory Server Enterprise Edition 6.0 through 6.3.1 does not properly handle multiple client connections within a short time window, which allows remote attackers to hijack the backend connection of an authenticated user, and obtain the privileges of this user, by making a client connection in opportunistic circumstances, related to "long binds," aka Bug Ids 6828462 and 6823593.

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

Affected products

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

References

LinkTags
http://secunia.com/advisories/37915
http://sunsolve.sun.com/search/document.do?assetkey=1-21-141958-01-1 Patch
http://sunsolve.sun.com/search/document.do?assetkey=1-66-270789-1 PatchVendor Advisory
http://www.securityfocus.com/bid/37481
http://www.securitytracker.com/id?1023389
http://www.vupen.com/english/advisories/2009/3647
http://secunia.com/advisories/37915
http://sunsolve.sun.com/search/document.do?assetkey=1-21-141958-01-1 Patch
http://sunsolve.sun.com/search/document.do?assetkey=1-66-270789-1 PatchVendor Advisory
http://www.securityfocus.com/bid/37481
http://www.securitytracker.com/id?1023389
http://www.vupen.com/english/advisories/2009/3647

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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-2009-4440), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.