# CVE-2021-37200: Path traversal in SINEC NMS

> An attacker can download arbitrary files from the underlying filesystem via a crafted HTTP request in Siemens SINEC NMS.

- **Severity:** High 7.7 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Sep 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-fx3m-586f-fprw

## What is CVE-2021-37200?

CVE-2021-37200 is a high-severity path traversal vulnerability in Siemens SINEC NMS, published on 14 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP1). An attacker with access to the webserver of an affected system could download arbitrary files from the underlying filesystem by sending a specially crafted HTTP request.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2021-37200?

It affects 1 product.


Products: Siemens Sinec Network Management System.

## How do I fix CVE-2021-37200?

No fix has been published for CVE-2021-37200 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-37200 being exploited?

There is no known exploitation of CVE-2021-37200 in the wild and no public exploit code.

## Other vulnerabilities in Siemens SINEC NMS

- [CVE-2021-37201](https://insights.sbomify.com/CVE-2021-37201/): Cross-site request forgery in SINEC NMS (high 8.8)
- [CVE-2020-25237](https://insights.sbomify.com/CVE-2020-25237/): Path traversal in SINEC NMS (high 8.1)
- [CVE-2022-25311](https://insights.sbomify.com/CVE-2022-25311/): Privilege escalation in SINEC NMS (high 7.3)
- [CVE-2022-24281](https://insights.sbomify.com/CVE-2022-24281/): SQL injection in SINEC NMS (high 7.2)
- [CVE-2022-24282](https://insights.sbomify.com/CVE-2022-24282/): Deserialization in SINEC NMS (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-37200 and fix it if it is affected.

What it is: CVE-2021-37200 is a high-severity path traversal vulnerability in Siemens SINEC NMS, published on 14 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-37200 in the wild and no public exploit code.

Affected product: Siemens SINEC NMS. 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-2021-37200/ (Markdown: https://insights.sbomify.com/CVE-2021-37200/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-37200
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-37200
- OSV: https://osv.dev/vulnerability/CVE-2021-37200

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-37200/
Summaries are generated and may contain mistakes; the official description above is the record.