# CVE-2007-6255: Memory corruption in n/a

> Remote attackers can execute arbitrary code via a buffer overflow in the Microsoft HeartbeatCtl ActiveX control, requiring user interaction to trigger.

- **Severity:** Critical 9.3 (`AV:N/AC:M/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:** 23 Apr 2008
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-x955-r3qp-hgr4

## What is CVE-2007-6255?

CVE-2007-6255 is a critical memory corruption vulnerability in Microsoft Windows 2000, published on 23 Apr 2008. 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

Buffer overflow in the Microsoft HeartbeatCtl ActiveX control in HRTBEAT.OCX allows remote attackers to execute arbitrary code via the Host argument to an unspecified method.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2007-6255?

It affects 4 products.


Products: Microsoft Windows 2000, Microsoft Windows Server 2003, Microsoft Windows Vista, Microsoft Windows Xp.

## How do I fix CVE-2007-6255?

No fix has been published for CVE-2007-6255 yet. Limit exposure of the affected software until one is available.

## Is CVE-2007-6255 being exploited?

There is no known exploitation of CVE-2007-6255 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Windows 2000

- [CVE-2008-4250](https://insights.sbomify.com/CVE-2008-4250/): Microsoft Windows Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2010-0232](https://insights.sbomify.com/CVE-2010-0232/): Microsoft Windows Kernel Exception Handler (high 7.8, exploited in the wild)
- [CVE-2009-1123](https://insights.sbomify.com/CVE-2009-1123/): Microsoft Windows Improper Input Validation (high 7.8, exploited in the wild)
- [CVE-2002-0367](https://insights.sbomify.com/CVE-2002-0367/): Microsoft Windows Privilege Escalation (high 7.8, exploited in the wild)
- [CVE-2010-0269](https://insights.sbomify.com/CVE-2010-0269/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2007-6255 and fix it if it is affected.

What it is: CVE-2007-6255 is a critical memory corruption vulnerability in Microsoft Windows 2000, published on 23 Apr 2008. 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-2007-6255 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-2007-6255/ (Markdown: https://insights.sbomify.com/CVE-2007-6255/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2007-6255
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2007-6255
- OSV: https://osv.dev/vulnerability/CVE-2007-6255

---
From sbomify Insights: https://insights.sbomify.com/CVE-2007-6255/
Summaries are generated and may contain mistakes; the official description above is the record.