# CVE-2024-2421: LenelS2 NetBox Improper Neutralization of Special Elements

> Unauthenticated attackers can execute arbitrary commands with elevated permissions on LenelS2 NetBox access control systems.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 30 May 2024
- **Updated:** 1 Aug 2024

## What is CVE-2024-2421?

CVE-2024-2421 is a critical command injection vulnerability in LenelS2 NetBox, published on 30 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

LenelS2 NetBox access control and event monitoring system was discovered to contain an unauthenticated RCE in versions prior to and including 5.6.1, which allows an attacker to execute malicious commands with elevated permissions.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2024-2421?

It affects 1 product.


Products: Honeywell Lenels2 Netbox.

## How do I fix CVE-2024-2421?

No fix has been published for CVE-2024-2421 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-2421 being exploited?

There is no known exploitation of CVE-2024-2421 in the wild and no public exploit code.

## Other vulnerabilities in LenelS2 NetBox

- [CVE-2024-2422](https://insights.sbomify.com/CVE-2024-2422/): LenelS2 NetBox Improper Neutralization of Argumented Delimiters (critical 9.3)
- [CVE-2024-2420](https://insights.sbomify.com/CVE-2024-2420/): LenelS2 NetBox Hardcoded Credentials (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-2421 and fix it if it is affected.

What it is: CVE-2024-2421 is a critical command injection vulnerability in LenelS2 NetBox, published on 30 May 2024. 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-2024-2421 in the wild and no public exploit code.

Affected product: LenelS2 NetBox. 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-2024-2421/ (Markdown: https://insights.sbomify.com/CVE-2024-2421/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-2421
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-2421
- OSV: https://osv.dev/vulnerability/CVE-2024-2421

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-2421/
Summaries are generated and may contain mistakes; the official description above is the record.