# CVE-2004-0201: Memory corruption in n/a

> Remote attackers can execute arbitrary code by tricking users into opening a malicious CHM file in Windows HTML Help.

- **Severity:** Critical 10.0 (`AV:N/AC:L/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 14 Jul 2004
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-rfqx-p859-5rqq

## What is CVE-2004-0201?

CVE-2004-0201 is a critical memory corruption vulnerability in Microsoft Windows 2000, published on 14 Jul 2004. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Heap-based buffer overflow in the HtmlHelp program (hh.exe) in HTML Help for Microsoft Windows 98, Me, NT 4.0, 2000, XP, and Server 2003 allows remote attackers to execute arbitrary commands via a .CHM file with a large length field, a different vulnerability than CVE-2003-1041.

## Which versions are affected by CVE-2004-0201?

It affects 11 products.


Products: Avaya Definity One Media Server, Avaya Ip600 Media Servers, Avaya Modular Messaging Message Storage Server, Avaya S8100, Microsoft Windows 2000, Microsoft Windows 2003 Server, Microsoft Windows 98, Microsoft Windows 98se, Microsoft Windows Me, Microsoft Windows Nt, Microsoft Windows Xp.

## How do I fix CVE-2004-0201?

No fix has been published for CVE-2004-0201 yet. Limit exposure of the affected software until one is available.

## Is CVE-2004-0201 being exploited?

There is no known exploitation of CVE-2004-0201 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Windows 2000

- [CVE-2004-1050](https://insights.sbomify.com/CVE-2004-1050/): Memory corruption in n/a (critical 10.0)
- [CVE-2004-0212](https://insights.sbomify.com/CVE-2004-0212/): Memory corruption in n/a (critical 10.0)
- [CVE-2007-2374](https://insights.sbomify.com/CVE-2007-2374/): Code injection in n/a (critical 9.3)
- [CVE-2007-1765](https://insights.sbomify.com/CVE-2007-1765/): Memory corruption in n/a (critical 9.3)
- [CVE-2004-0842](https://insights.sbomify.com/CVE-2004-0842/): Memory corruption in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2004-0201 and fix it if it is affected.

What it is: CVE-2004-0201 is a critical memory corruption vulnerability in Microsoft Windows 2000, published on 14 Jul 2004. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2004-0201 in the wild and no public exploit code.

Affected product: Microsoft Windows 2000. 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-2004-0201/ (Markdown: https://insights.sbomify.com/CVE-2004-0201/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2004-0201
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2004-0201
- OSV: https://osv.dev/vulnerability/CVE-2004-0201

---
From sbomify Insights: https://insights.sbomify.com/CVE-2004-0201/
Summaries are generated and may contain mistakes; the official description above is the record.