# CVE-2021-40355: Missing authorization in Teamcenter V12.4

> An attacker can access unauthorized objects directly via user-supplied input due to an Insecure Direct Object Reference vulnerability in Siemens Teamcenter.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **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-788w-w3g2-24ww

## What is CVE-2021-40355?

CVE-2021-40355 is a high-severity missing authorization vulnerability in Siemens Teamcenter Visualization, 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 Teamcenter V12.4 (All versions < V12.4.0.8), Teamcenter V13.0 (All versions < V13.0.0.7), Teamcenter V13.1 (All versions < V13.1.0.5), Teamcenter V13.2 (All versions < 13.2.0.2). The affected application contains Insecure Direct Object Reference (IDOR) vulnerability that allows an attacker to use user-supplied input to access objects directly.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2021-40355?

It affects 1 product.


Products: Siemens Teamcenter Visualization.

## How do I fix CVE-2021-40355?

No fix has been published for CVE-2021-40355 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-40355 being exploited?

There is no known exploitation of CVE-2021-40355 in the wild and no public exploit code.

## Other vulnerabilities in Siemens Teamcenter Visualization

- [CVE-2021-40356](https://insights.sbomify.com/CVE-2021-40356/): XML external entity in Teamcenter V12.4 (high 7.5)
- [CVE-2025-32454](https://insights.sbomify.com/CVE-2025-32454/): Memory corruption in Teamcenter Visualization V14.3 (high 7.3)
- [CVE-2025-23396](https://insights.sbomify.com/CVE-2025-23396/): Memory corruption in Teamcenter Visualization V14.3 (high 7.3)
- [CVE-2025-23397](https://insights.sbomify.com/CVE-2025-23397/): Memory corruption in Teamcenter Visualization V14.3 (high 7.3)
- [CVE-2025-23398](https://insights.sbomify.com/CVE-2025-23398/): Memory corruption in Teamcenter Visualization V14.3 (high 7.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-40355 and fix it if it is affected.

What it is: CVE-2021-40355 is a high-severity missing authorization vulnerability in Siemens Teamcenter Visualization, 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-2021-40355 in the wild and no public exploit code.

Affected product: Siemens Teamcenter Visualization. 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-2021-40355/ (Markdown: https://insights.sbomify.com/CVE-2021-40355/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-40355
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-40355
- OSV: https://osv.dev/vulnerability/CVE-2021-40355

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-40355/
Summaries are generated and may contain mistakes; the official description above is the record.