# CVE-2024-11253: Command injection in VMG8825-T50K firmware

> An authenticated administrator can execute arbitrary OS commands via the diagnostic function's DNSServer parameter in Zyxel VMG8825-T50K firmware.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Mar 2025
- **Updated:** 26 Feb 2026
- **Also known as:** GHSA-3gv5-2r5q-m2jj

## What is CVE-2024-11253?

CVE-2024-11253 is a high-severity command injection vulnerability in Zyxel VMG8825-T50K firmware, published on 11 Mar 2025. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A post-authentication command injection vulnerability in the "DNSServer” parameter of the diagnostic function in the Zyxel VMG8825-T50K firmware version V5.50(ABOM.8.5)C0 and earlier could allow an authenticated attacker with administrator privileges to execute operating system (OS) commands on a vulnerable device.

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

## Which versions are affected by CVE-2024-11253?

It affects 6 products.


Products: Zyxel Dm4200-B0 Firmware, Zyxel Emg5723-T50k Firmware, Zyxel Vmg3927-T50k Firmware, Zyxel Vmg4005-B50a Firmware, Zyxel Vmg4005-B60a Firmware, Zyxel Vmg8825-T50k Firmware.

## How do I fix CVE-2024-11253?

No fix has been published for CVE-2024-11253 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-11253 being exploited?

There is no known exploitation of CVE-2024-11253 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-11253 and fix it if it is affected.

What it is: CVE-2024-11253 is a high-severity command injection vulnerability in Zyxel VMG8825-T50K firmware, published on 11 Mar 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-11253 in the wild and no public exploit code.

Affected product: Zyxel VMG8825-T50K firmware. 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-2024-11253/ (Markdown: https://insights.sbomify.com/CVE-2024-11253/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-11253
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-11253
- OSV: https://osv.dev/vulnerability/CVE-2024-11253

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-11253/
Summaries are generated and may contain mistakes; the official description above is the record.