# CVE-2009-0566: Memory corruption in n/a

> Remote attackers can execute arbitrary code via a crafted Publisher file due to improper object handler data calculation causing memory corruption.

- **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:** 15 Jul 2009
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-4564-2f76-rv6p

## What is CVE-2009-0566?

CVE-2009-0566 is a critical memory corruption vulnerability in n/a, published on 15 Jul 2009. 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

Microsoft Office Publisher 2007 SP1 does not properly calculate object handler data for Publisher files, which allows remote attackers to execute arbitrary code via a crafted file in a legacy format that triggers memory corruption, aka "Pointer Dereference Vulnerability."

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2009-0566?

It affects 1 product.


Products: Microsoft Office Publisher.

## How do I fix CVE-2009-0566?

No fix has been published for CVE-2009-0566 yet. Limit exposure of the affected software until one is available.

## Is CVE-2009-0566 being exploited?

There is no known exploitation of CVE-2009-0566 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2009-0566 and fix it if it is affected.

What it is: CVE-2009-0566 is a critical memory corruption vulnerability in n/a, published on 15 Jul 2009. 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-2009-0566 in the wild and no public exploit code.

Affected product: n/a. 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-2009-0566/ (Markdown: https://insights.sbomify.com/CVE-2009-0566/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-0566
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-0566
- OSV: https://osv.dev/vulnerability/CVE-2009-0566

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From sbomify Insights: https://insights.sbomify.com/CVE-2009-0566/
Summaries are generated and may contain mistakes; the official description above is the record.