# CVE-2021-36201: CCURE Observable Response Discrepancy

> Attackers can enumerate user accounts in CCURE 9000 due to observable response discrepancies, exposing valid usernames.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:A/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Oct 2022
- **Updated:** 15 May 2025
- **Also known as:** GHSA-r78m-94wm-v7cv

## What is CVE-2021-36201?

CVE-2021-36201 is a medium-severity vulnerability in Johnson Controls C•CURE 9000, published on 11 Oct 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Under certain circumstances a CCURE Portal user could enumerate user accounts in CCURE 9000 version 2.90 and prior versions.

Weakness: CWE-203 (Observable Discrepancy), CWE-204 (Observable Response Discrepancy)

## Which versions are affected by CVE-2021-36201?

It affects 1 product.


Products: Johnsoncontrols C-Cure 9000 Firmware.

## How do I fix CVE-2021-36201?

No fix has been published for CVE-2021-36201 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-36201 being exploited?

There is no known exploitation of CVE-2021-36201 in the wild and no public exploit code.

## Other vulnerabilities in Johnson Controls C•CURE 9000

- [CVE-2020-9045](https://insights.sbomify.com/CVE-2020-9045/): Information disclosure in American Dynamics victor Video Management System v5.2 (critical 9.9)
- [CVE-2021-27660](https://insights.sbomify.com/CVE-2021-27660/): C-CURE 9000 (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-36201 and fix it if it is affected.

What it is: CVE-2021-36201 is a medium-severity vulnerability in Johnson Controls C•CURE 9000, published on 11 Oct 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-36201 in the wild and no public exploit code.

Affected product: Johnson Controls C•CURE 9000. 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-2021-36201/ (Markdown: https://insights.sbomify.com/CVE-2021-36201/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-36201
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-36201
- OSV: https://osv.dev/vulnerability/CVE-2021-36201

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-36201/
Summaries are generated and may contain mistakes; the official description above is the record.