# CVE-2021-43938: Elcomplus SmartPTT SCADA Server Information Exposure

> Unauthenticated attackers can access sensitive files from Elcomplus SmartPTT SCADA Server due to missing authorization checks.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Apr 2022
- **Updated:** 16 Apr 2025
- **Also known as:** GHSA-r4w7-99qp-4gfx

## What is CVE-2021-43938?

CVE-2021-43938 is a high-severity missing authorization vulnerability in Elcomplus SmartPTT SCADA Server, published on 29 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Elcomplus SmartPTT SCADA Server is vulnerable to an unauthenticated user can request various files from the server without any authentication or authorization.

Weakness: CWE-862 (Missing Authorization), CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2021-43938?

It affects 1 product.


Products: Smartptt Scada Server.

## How do I fix CVE-2021-43938?

No fix has been published for CVE-2021-43938 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-43938 being exploited?

There is no known exploitation of CVE-2021-43938 in the wild and no public exploit code.

## Other vulnerabilities in Elcomplus SmartPTT SCADA Server

- [CVE-2021-43937](https://insights.sbomify.com/CVE-2021-43937/): Elcomplus SmartPTT SCADA Server Cross-site Request Forgery (high 7.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-43938 and fix it if it is affected.

What it is: CVE-2021-43938 is a high-severity missing authorization vulnerability in Elcomplus SmartPTT SCADA Server, published on 29 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-43938 in the wild and no public exploit code.

Affected product: Elcomplus SmartPTT SCADA Server. 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-2021-43938/ (Markdown: https://insights.sbomify.com/CVE-2021-43938/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-43938
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-43938
- OSV: https://osv.dev/vulnerability/CVE-2021-43938

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-43938/
Summaries are generated and may contain mistakes; the official description above is the record.