# CVE-2026-2188: UTT 进取 521G formPdbUpConfig sub_446B18 os command injection

> Remote attackers can execute arbitrary OS commands on UTT 521G routers via the formPdbUpConfig interface.

- **Severity:** High 8.6 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Feb 2026
- **Updated:** 23 Feb 2026
- **Also known as:** GHSA-jc73-4hpp-ffh8

## What is CVE-2026-2188?

CVE-2026-2188 is a high-severity command injection vulnerability in UTT 进取 521G, published on 8 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability was determined in UTT 进取 521G 3.1.1-190816. The impacted element is the function sub_446B18 of the file /goform/formPdbUpConfig. Executing a manipulation of the argument policyNames can lead to os command injection. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2026-2188?

It affects 1 product.


Products: Utt 521g Firmware.

## How do I fix CVE-2026-2188?

No fix has been published for CVE-2026-2188 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-2188 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2188 exists.

## Other vulnerabilities in UTT 进取 521G

- [CVE-2026-2182](https://insights.sbomify.com/CVE-2026-2182/): UTT 进取 521G setSysAdm doSystem command injection (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-2188 and fix it if it is affected.

What it is: CVE-2026-2188 is a high-severity command injection vulnerability in UTT 进取 521G, published on 8 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2188 exists.

Affected product: UTT 进取 521G. 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-2026-2188/ (Markdown: https://insights.sbomify.com/CVE-2026-2188/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-2188
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-2188
- OSV: https://osv.dev/vulnerability/CVE-2026-2188

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-2188/
Summaries are generated and may contain mistakes; the official description above is the record.