CVE-2005-4134

What it is

Mozilla Firefox 1.5, Netscape 8.0.4 and 7.2, and K-Meleon before 0.9.12 allows remote attackers to cause a denial of service (CPU consumption and delayed application startup) via a web site with a large title, which is recorded in history.dat but not processed efficiently during startup. NOTE: despite initial reports, the Mozilla vendor does not believe that this issue can be used to trigger a crash or buffer overflow in Firefox. Also, it has been independently reported that Netscape 8.1 does not have this issue.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

12.6% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

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

Timeline

1. 2005-12-09 15:03 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:18 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 12.6% in the next 30 days (EPSS).
• Severity: 5.0 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2005-12-09 15:03 UTC

Last modified

2026-06-16 22:18 UTC

Exploit probability

12.6% · EPSS, next 30 days

Record status

Modified

Affected

• k-meleon Project k-meleon ≤ 0.9
• k-meleon Project k-meleon 0.7
• k-meleon Project k-meleon 0.7_service_pack_1
• k-meleon Project k-meleon 0.8
• k-meleon Project k-meleon 0.8.1
• k-meleon Project k-meleon 0.8.2
• Mozilla Firefox ≤ 1.5
• Mozilla Suite ≤ 1.7.12

Attack profile CVSS 2.0 · 5.0

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

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-2005-4134.md and follow it. Check whether this project is affected by CVE-2005-4134. 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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