How severe is CVE-2009-0433?

CVE-2009-0433 has a CVSS 2.0 base score of 2.6, rated low severity.

Is CVE-2009-0433 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0433?

CVE-2009-0433 primarily affects Ibm Websphere Application Server. In total, 73 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-0433?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-0433 published?

CVE-2009-0433 was published on 2009-02-10 and last updated on 2026-06-16.

CVE-2009-0433

CVE-2009-0433 is a low-severity vulnerability in Ibm Websphere Application Server with a CVSS 2.0 base score of 2.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Low (CVSS 2.0 base score 2.6)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ibm Websphere Application Server
Published: 2009-02-10
Last modified: 2026-06-16

Description

Unspecified vulnerability in IBM WebSphere Application Server (WAS) 5.1.x before 5.1.1.19, 6.0.x before 6.0.2.29, and 6.1.x before 6.1.0.19, when Web Server plug-in content buffering is enabled, allows attackers to cause a denial of service (daemon crash) via unknown vectors, related to a mishandling of client read failures in which clients receive many 500 HTTP error responses and backend servers are incorrectly labeled as down.

Frequently asked questions

What is CVE-2009-0433?: Unspecified vulnerability in IBM WebSphere Application Server (WAS) 5.1.x before 5.1.1.19, 6.0.x before 6.0.2.29, and 6.1.x before 6.1.0.19, when Web Server plug-in content buffering is enabled, allows attackers to cause a denial of service (daemon crash) via unknown vectors, related to a mishandling of client read failures in which clients receive many 500 HTTP error responses and backend servers are incorrectly labeled as down.
How severe is CVE-2009-0433?: CVE-2009-0433 has a CVSS 2.0 base score of 2.6, rated low severity.
Is CVE-2009-0433 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0433?: CVE-2009-0433 primarily affects Ibm Websphere Application Server. In total, 73 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-0433?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-0433 published?: CVE-2009-0433 was published on 2009-02-10 and last updated on 2026-06-16.

References

Affected products (73)

cpe:2.3:a:ibm:websphere_application_server:5.1.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.10:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.11:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.12:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.13:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.14:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.15:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.16:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.17:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.18:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.19:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.0.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.0.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.0.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.1.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.1.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.1.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.1.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.1.7:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.1.9:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.1.11:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.1.13:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.1.15:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.1.17:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.2.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.2.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.2.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.2.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.2.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.2.6:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.0.2.7:*:*:*:*:*:*:*

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