Is CVE-2007-3304 in the CISA KEV catalog?

No. CVE-2007-3304 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2007-3304?

CVE-2007-3304 has a CVSS v2 base score of 4.7 (MEDIUM).

What is the EPSS score for CVE-2007-3304?

CVE-2007-3304 has an EPSS score of 3.30% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2007-3304?

Upgrade apache2 on debian 11 to 2.2.4-2 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2007-3304

MEDIUMEPSS 87th pctl

4.7

CVSS v2

NVD

Description

Apache httpd 1.3.37, 2.0.59, and 2.2.4 with the Prefork MPM module, allows local users to cause a denial of service by modifying the worker_score and process_score arrays to reference an arbitrary process ID, which is sent a SIGUSR1 signal from the master process, aka "SIGUSR1 killer."

How to fix

Remediation Available

apache2Debian

Fixed in:2.2.4-2CVE-2007-3304

Apache Lounge httpdWindows application

Affected:2.2.0 2.2.6Fixed in:2.2.6Apache Lounge

Affected:2.0.0 2.0.61Fixed in:2.0.61Apache Lounge

Affected:1.3.0 1.3.39Fixed in:1.3.39Apache Lounge

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

3.30%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.