# CVE-2006-2426: Denial of service in n/a

> Remote attackers can cause denial of service by creating large temporary files via the Font.createFont function in the Java Runtime Environment.

- **Severity:** Medium 6.4 (`AV:N/AC:L/Au:N/C:N/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 17 May 2006
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-mwm5-6468-q7xv

## What is CVE-2006-2426?

CVE-2006-2426 is a medium-severity denial of service vulnerability in Sun Jdk, published on 17 May 2006. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Sun Java Runtime Environment (JRE) 1.5.0_6 and earlier, JDK 1.5.0_6 and earlier, and SDK 1.5.0_6 and earlier allows remote attackers to cause a denial of service (disk consumption) by using the Font.createFont function to create temporary files of arbitrary size in the %temp% directory.

## Which versions are affected by CVE-2006-2426?

It affects 3 products.


Products: Sun Jdk, Sun Jre, Sun Sdk.

## How do I fix CVE-2006-2426?

Upgrade to a fixed version.

## Is CVE-2006-2426 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2006-2426 exists.

Public exploit code:

- Sun Java Applet - Font.createFont Remote Denial of Service (exploitdb)

## Other vulnerabilities in Sun Jdk

- [CVE-2011-3521](https://insights.sbomify.com/CVE-2011-3521/): Deserialization in n/a (critical 10.0)
- [CVE-2011-3548](https://insights.sbomify.com/CVE-2011-3548/): Other in n/a (critical 10.0)
- [CVE-2011-3549](https://insights.sbomify.com/CVE-2011-3549/): Other in n/a (critical 10.0)
- [CVE-2011-3554](https://insights.sbomify.com/CVE-2011-3554/): Other in n/a (critical 10.0)
- [CVE-2011-0802](https://insights.sbomify.com/CVE-2011-0802/): Other in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2006-2426 and fix it if it is affected.

What it is: CVE-2006-2426 is a medium-severity denial of service vulnerability in Sun Jdk, published on 17 May 2006. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2006-2426 exists.

Affected product: Sun Jdk. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2006-2426/ (Markdown: https://insights.sbomify.com/CVE-2006-2426/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2006-2426
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2006-2426
- OSV: https://osv.dev/vulnerability/CVE-2006-2426

---
From sbomify Insights: https://insights.sbomify.com/CVE-2006-2426/
Summaries are generated and may contain mistakes; the official description above is the record.