# CVE-2013-0073: Privilege escalation in n/a

> Remote attackers can execute arbitrary code and escalate privileges via crafted XBAP or .NET applications due to improper callback restriction in WinForms.

- **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:** 13 Feb 2013
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-j6wg-4rhr-4w7q

## What is CVE-2013-0073?

CVE-2013-0073 is a critical vulnerability in Microsoft .Net Framework, published on 13 Feb 2013. 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

The Windows Forms (aka WinForms) component in Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, and 4.5 does not properly restrict the privileges of a callback function during object creation, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (XBAP) or (2) a crafted .NET Framework application, aka "WinForms Callback Elevation Vulnerability."

Weakness: CWE-264

## Which versions are affected by CVE-2013-0073?

It affects 1 product.


Products: Microsoft .Net Framework.

## How do I fix CVE-2013-0073?

No fix has been published for CVE-2013-0073 yet. Limit exposure of the affected software until one is available.

## Is CVE-2013-0073 being exploited?

There is no known exploitation of CVE-2013-0073 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft .Net Framework

- [CVE-2020-0646](https://insights.sbomify.com/CVE-2020-0646/): Microsoft .NET Framework Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2017-8759](https://insights.sbomify.com/CVE-2017-8759/): Microsoft .NET Framework Remote Code Execution (high 7.8, exploited in the wild)
- [CVE-2015-1671](https://insights.sbomify.com/CVE-2015-1671/): Microsoft Windows Remote Code Execution (high 7.8, exploited in the wild)
- [CVE-2024-29059](https://insights.sbomify.com/CVE-2024-29059/): Microsoft .NET Framework Information Disclosure (high 7.5, exploited in the wild)
- [CVE-2014-4073](https://insights.sbomify.com/CVE-2014-4073/): Privilege escalation in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2013-0073 and fix it if it is affected.

What it is: CVE-2013-0073 is a critical vulnerability in Microsoft .Net Framework, published on 13 Feb 2013. 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-2013-0073 in the wild and no public exploit code.

Affected product: Microsoft .Net Framework. 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-2013-0073/ (Markdown: https://insights.sbomify.com/CVE-2013-0073/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2013-0073
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2013-0073
- OSV: https://osv.dev/vulnerability/CVE-2013-0073

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From sbomify Insights: https://insights.sbomify.com/CVE-2013-0073/
Summaries are generated and may contain mistakes; the official description above is the record.