CVE-2007-3304

What it is

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."

At a glance

Exploitability

Can be exploited locally on the machine without logging in. High risk of service disruption.

Exploit odds

3.3% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2007-06-20 22:30 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:41 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 3.3% in the next 30 days (EPSS).
• Severity: 4.7 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2007-06-20 22:30 UTC

Last modified

2026-06-16 22:41 UTC

Exploit probability

3.3% · EPSS, next 30 days

Record status

Modified

Affected

• Apache Http Server < 1.3.39
• Apache Http Server < 2.0.61
• Apache Http Server < 2.2.6
• Fedoraproject Fedora 7
• Redhat Enterprise Linux Desktop 5.0
• Redhat Enterprise Linux Server 5.0
• Redhat Enterprise Linux Workstation 5.0
• Canonical Ubuntu Linux 6.06

Attack profile CVSS 2.0 · 4.7

Attack vector

Local

Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2007-3304.md and follow it. Check whether this project is affected by CVE-2007-3304. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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