HOMEVULNERABILITIESCVE-2009-4440
MEDIUM

CVE-2009-4440

CWE-362Published: December 28, 2009· Updated: Jun 16, 2026

6.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2009-4440 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityM
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityP
IntegrityP
AvailabilityP
AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected Vendors & Products

sun1 product(s)
java system directory server
Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttp://sunsolve.sun.com/search/document.do?assetkey=1-21-141958-01-1
PATCHhttp://sunsolve.sun.com/search/document.do?assetkey=1-66-270789-1
PATCHhttp://sunsolve.sun.com/search/document.do?assetkey=1-21-141958-01-1
PATCHhttp://sunsolve.sun.com/search/document.do?assetkey=1-66-270789-1

All References (12)

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

Quick Facts

CVE IDCVE-2009-4440
CVSS Score6.8 / 10
SeverityMEDIUM
WeaknessCWE-362
CISA KEVNo
Affected1 vendor(s)
PublishedDec 28, 2009

Related CVEs (CWE-362)

CVE-2014-0703
10.0
CVE-2010-1228
10.0
CVE-2015-8556
10.0
CVE-2008-6598
10.0
CVE-2025-66419
10.0
CVE-2020-1660
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2009-4440 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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