# CVE-2012-3040: Cross-site scripting in n/a

> Remote attackers can inject arbitrary web script or HTML into Siemens SIMATIC S7-1200 PLCs via a crafted URI, requiring user interaction to execute.

- **Severity:** Medium 4.3 (`AV:N/AC:M/Au:N/C:N/I:P/A:N`)
- **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:** 10 Oct 2012
- **Updated:** 23 May 2025
- **Also known as:** GHSA-53gc-p44w-x4v4

## What is CVE-2012-3040?

CVE-2012-3040 is a medium-severity cross-site scripting vulnerability in n/a, published on 10 Oct 2012. 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

Cross-site scripting (XSS) vulnerability in the web server on Siemens SIMATIC S7-1200 PLCs 2.x through 3.0.1 allows remote attackers to inject arbitrary web script or HTML via a crafted URI.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2012-3040?

It affects 9 products.


Products: Siemens Simatic S7-1200 Cpu 1211c Firmware, Siemens Simatic S7-1200 Cpu 1212c Firmware, Siemens Simatic S7-1200 Cpu 1212fc Firmware, Siemens Simatic S7-1200 Cpu 1214 Fc Firmware, Siemens Simatic S7-1200 Cpu 1214c Firmware, Siemens Simatic S7-1200 Cpu 1215 Fc Firmware, Siemens Simatic S7-1200 Cpu 1215c Firmware, Siemens Simatic S7-1200 Cpu 1217c Firmware, Siemens Simatic S7-1200 Firmware.

## How do I fix CVE-2012-3040?

No fix has been published for CVE-2012-3040 yet. Limit exposure of the affected software until one is available.

## Is CVE-2012-3040 being exploited?

There is no known exploitation of CVE-2012-3040 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2013-0700](https://insights.sbomify.com/CVE-2013-0700/): Denial of service in n/a (high 7.8)
- [CVE-2013-2780](https://insights.sbomify.com/CVE-2013-2780/): Denial of service in n/a (high 7.8)
- [CVE-2012-3037](https://insights.sbomify.com/CVE-2012-3037/): Hardcoded credentials in n/a (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-3040 and fix it if it is affected.

What it is: CVE-2012-3040 is a medium-severity cross-site scripting vulnerability in n/a, published on 10 Oct 2012. 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-2012-3040 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-2012-3040/ (Markdown: https://insights.sbomify.com/CVE-2012-3040/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-3040
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-3040
- OSV: https://osv.dev/vulnerability/CVE-2012-3040

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From sbomify Insights: https://insights.sbomify.com/CVE-2012-3040/
Summaries are generated and may contain mistakes; the official description above is the record.