# CVE-2023-33236: MXsecurity Hardcoded Credential Vulnerability

> Attackers can exploit hardcoded credentials to forge JWT tokens and bypass authentication on Moxa MXsecurity web APIs.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/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:** 22 May 2023
- **Updated:** 21 Jan 2025
- **Also known as:** GHSA-r6wg-6486-p79w

## What is CVE-2023-33236?

CVE-2023-33236 is a critical vulnerability in Moxa MXsecurity Series, published on 22 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

MXsecurity version 1.0 is vulnearble to hardcoded credential vulnerability. This vulnerability has been reported that can be exploited to craft arbitrary JWT tokens and subsequently bypass authentication for web-based APIs.

Weakness: CWE-798 (Use of Hard-coded Credentials)

## Which versions are affected by CVE-2023-33236?

It affects 1 product.


Products: Moxa Mxsecurity.

## How do I fix CVE-2023-33236?

No fix has been published for CVE-2023-33236 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-33236 being exploited?

There is no known exploitation of CVE-2023-33236 in the wild and no public exploit code.

## Other vulnerabilities in Moxa MXsecurity Series

- [CVE-2023-39979](https://insights.sbomify.com/CVE-2023-39979/): MXsecurity Authentication Bypass (critical 9.8)
- [CVE-2023-39981](https://insights.sbomify.com/CVE-2023-39981/): MXsecurity Device Information Disclosure (high 7.5)
- [CVE-2023-39982](https://insights.sbomify.com/CVE-2023-39982/): MXsecurity Hardcoded Credential (high 7.5)
- [CVE-2023-33235](https://insights.sbomify.com/CVE-2023-33235/): MXsecurity Command Injection Vulnerability (high 7.2)
- [CVE-2023-39980](https://insights.sbomify.com/CVE-2023-39980/): MXsecurity Authenticated Information Disclosure Due to SQL Injection (high 7.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-33236 and fix it if it is affected.

What it is: CVE-2023-33236 is a critical vulnerability in Moxa MXsecurity Series, published on 22 May 2023. 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-2023-33236 in the wild and no public exploit code.

Affected product: Moxa MXsecurity Series. 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-2023-33236/ (Markdown: https://insights.sbomify.com/CVE-2023-33236/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-33236
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-33236
- OSV: https://osv.dev/vulnerability/CVE-2023-33236

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-33236/
Summaries are generated and may contain mistakes; the official description above is the record.