# CVE-2023-27921: Hardcoded credentials in JINS MEME CORE

> A network-adjacent attacker can decrypt sensor data from JINS MEME CORE devices due to a hard-coded cryptographic key in the firmware.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/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:** 23 May 2023
- **Updated:** 31 Jan 2025
- **Also known as:** GHSA-2c74-2hh4-g45r

## What is CVE-2023-27921?

CVE-2023-27921 is a medium-severity vulnerability in JINS MEME CORE, published on 23 May 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

JINS MEME CORE Firmware version 2.2.0 and earlier uses a hard-coded cryptographic key, which may lead to data acquired by a sensor of the affected product being decrypted by a network-adjacent attacker.

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

## Which versions are affected by CVE-2023-27921?

It affects 1 product.


Products: Jins Jins Meme Firmware.

## How do I fix CVE-2023-27921?

No fix has been published for CVE-2023-27921 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-27921 being exploited?

There is no known exploitation of CVE-2023-27921 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-27921 and fix it if it is affected.

What it is: CVE-2023-27921 is a medium-severity vulnerability in JINS MEME CORE, published on 23 May 2023. 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-2023-27921 in the wild and no public exploit code.

Affected product: JINS MEME CORE. 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-2023-27921/ (Markdown: https://insights.sbomify.com/CVE-2023-27921/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-27921
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-27921
- OSV: https://osv.dev/vulnerability/CVE-2023-27921

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-27921/
Summaries are generated and may contain mistakes; the official description above is the record.