CVE-2009-4440

mediumpriority · track · 28EPSS 0.016 · 76 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.60% (76th) EPSS

CVSS 6.8 · medium

Is it mine?

5 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-28

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.

cvss

Technical severity, 0–10. One row per scoring source.

6.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v2.05.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:P/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-362USprimary

affected products (5)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
sun java system directory server= 6.0nvdUScpe:2.3:a:sun:java_system_directory_server:*:*:*:*:*:*:*:*
sun java system directory server= 6.1nvdUScpe:2.3:a:sun:java_system_directory_server:*:*:*:*:*:*:*:*
sun java system directory server= 6.2nvdUScpe:2.3:a:sun:java_system_directory_server:*:*:*:*:*:*:*:*
sun java system directory server= 6.3nvdUScpe:2.3:a:sun:java_system_directory_server:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd nvd NVD CVE.org MITRE

published 2009-12-28modified 2026-06-16

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+4154 more

references (12)

External citations — patches, advisories, analysis.

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