# CVE-2021-44794: Information Leakege via Unauthorized Access in Single Connect

> Remote attackers can access sensitive device information via the diagnostic UI due to missing authorization checks in Kron Single Connect.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Jan 2022
- **Updated:** 18 May 2026
- **Also known as:** GHSA-6p9r-qwhr-gc82

## What is CVE-2021-44794?

CVE-2021-44794 is a medium-severity missing authorization vulnerability in Kron Single Connect, published on 27 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Single Connect does not perform an authorization check when using the "sc-diagnostic-ui" module. A remote attacker could exploit this vulnerability to access the device information page. The exploitation of this vulnerability might allow a remote attacker to obtain sensitive information.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2021-44794?

It affects 1 product.


Products: Krontech Single Connect.

## How do I fix CVE-2021-44794?

No fix has been published for CVE-2021-44794 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-44794 being exploited?

There is no known exploitation of CVE-2021-44794 in the wild and no public exploit code.

## Other vulnerabilities in Kron Single Connect

- [CVE-2023-0882](https://insights.sbomify.com/CVE-2023-0882/): Authorization Bypass Through User-Controlled Key on Single Connect (high 8.8)
- [CVE-2021-44793](https://insights.sbomify.com/CVE-2021-44793/): Information Leakege via Unauthorized Access in Single Connect (high 8.6)
- [CVE-2021-44792](https://insights.sbomify.com/CVE-2021-44792/): Information Leakege via Unauthorized Access in Single Connect (medium 5.3)
- [CVE-2021-44795](https://insights.sbomify.com/CVE-2021-44795/): Modifying User Permissions via Unauthorized Access in Single Connect (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-44794 and fix it if it is affected.

What it is: CVE-2021-44794 is a medium-severity missing authorization vulnerability in Kron Single Connect, published on 27 Jan 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-2021-44794 in the wild and no public exploit code.

Affected product: Kron Single Connect. 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-2021-44794/ (Markdown: https://insights.sbomify.com/CVE-2021-44794/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-44794
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-44794
- OSV: https://osv.dev/vulnerability/CVE-2021-44794

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-44794/
Summaries are generated and may contain mistakes; the official description above is the record.