How severe is CVE-2004-0009?

CVE-2004-0009 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2004-0009 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-0009?

CVE-2004-0009 affects Apache-ssl. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2004-0009?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2004-0009 published?

CVE-2004-0009 was published on 2004-03-03 and last updated on 2026-06-16.

CVE-2004-0009

CVE-2004-0009 is a high-severity vulnerability in Apache-ssl with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apache-ssl
Published: 2004-03-03
Last modified: 2026-06-16

Description

Apache-SSL 1.3.28+1.52 and earlier, with SSLVerifyClient set to 1 or 3 and SSLFakeBasicAuth enabled, allows remote attackers to forge a client certificate by using basic authentication with the "one-line DN" of the target user.

Frequently asked questions

What is CVE-2004-0009?: Apache-SSL 1.3.28+1.52 and earlier, with SSLVerifyClient set to 1 or 3 and SSLFakeBasicAuth enabled, allows remote attackers to forge a client certificate by using basic authentication with the "one-line DN" of the target user.
How severe is CVE-2004-0009?: CVE-2004-0009 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2004-0009 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-0009?: CVE-2004-0009 affects Apache-ssl. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2004-0009?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2004-0009 published?: CVE-2004-0009 was published on 2004-03-03 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:apache-ssl:apache-ssl:*:*:*:*:*:*:*:*

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