CVE-2009-0609

Sun Java System Directory Proxy Server in Sun Java System Directory Server Enterprise Edition 6.0 through 6.3, when a JDBC data source is used, does not properly handle (1) a long value in an ADD or (2) long string attributes, which allows remote attackers to cause a denial of service (JDBC backend outage) via crafted LDAP requests.

Published: 2009-02-17 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-0609 is rated Moderate Risk (62.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.54%). EPSS rose +1.88% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2009-0609

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.66% 2.54% +1.88%
2 2025-03-30 0.62% 0.66% +0.04%
3 2025-03-29 — 0.62% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-0609

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 2.0 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 6.9 [email protected]

Weakness enumeration for CVE-2009-0609

Affected software / configurations for CVE-2009-0609

Vendor Product Version Raw CPE
sun java_system_directory_server 6.0 cpe:2.3:a:sun:java_system_directory_server:6.0:enterprise:*:*:*:*:*:*
sun java_system_directory_server 6.1 cpe:2.3:a:sun:java_system_directory_server:6.1:enterprise:*:*:*:*:*:*
sun java_system_directory_server 6.2 cpe:2.3:a:sun:java_system_directory_server:6.2:enterprise:*:*:*:*:*:*
sun java_system_directory_server 6.3 cpe:2.3:a:sun:java_system_directory_server:6.3:enterprise:*:*:*:*:*:*

References for CVE-2009-0609

cvelogic Threat Intelligence