# CVE-2022-34428: Denial of service in Dell Hybrid Client (DHC)

> An attacker with admin access can cause temporary denial of service in Dell Hybrid Client via a regex vulnerability.

- **Severity:** Medium 5.0 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 30 Sep 2022
- **Updated:** 20 May 2025
- **Also known as:** GHSA-2c8v-3247-5w53

## What is CVE-2022-34428?

CVE-2022-34428 is a medium-severity denial of service vulnerability in Dell Hybrid Client (DHC), published on 30 Sep 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Dell Hybrid Client prior to version 1.8 contains a Regular Expression Denial of Service Vulnerability in the UI. An adversary with WMS group admin access could potentially exploit this vulnerability, leading to temporary denial-of-service.

Weakness: CWE-1333 (Inefficient Regular Expression Complexity)

## Which versions are affected by CVE-2022-34428?

It affects 1 product.


Products: Dell Hybrid Client.

## How do I fix CVE-2022-34428?

No fix has been published for CVE-2022-34428 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-34428 being exploited?

There is no known exploitation of CVE-2022-34428 in the wild and no public exploit code.

## Other vulnerabilities in Dell Hybrid Client (DHC)

- [CVE-2021-21535](https://insights.sbomify.com/CVE-2021-21535/): Missing authorization in Dell Hybrid Client (DHC) (high 7.4)
- [CVE-2022-34432](https://insights.sbomify.com/CVE-2022-34432/): Command injection in Dell Hybrid Client (DHC) (high 7.3)
- [CVE-2022-34430](https://insights.sbomify.com/CVE-2022-34430/): Denial of service in Dell Hybrid Client (DHC) (high 7.1)
- [CVE-2022-34431](https://insights.sbomify.com/CVE-2022-34431/): Denial of service in Dell Hybrid Client (DHC) (medium 6.5)
- [CVE-2022-34429](https://insights.sbomify.com/CVE-2022-34429/): Path traversal in Dell Hybrid Client (DHC) (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-34428 and fix it if it is affected.

What it is: CVE-2022-34428 is a medium-severity denial of service vulnerability in Dell Hybrid Client (DHC), published on 30 Sep 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-34428 in the wild and no public exploit code.

Affected product: Dell Hybrid Client (DHC). 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-2022-34428/ (Markdown: https://insights.sbomify.com/CVE-2022-34428/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-34428
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-34428
- OSV: https://osv.dev/vulnerability/CVE-2022-34428

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-34428/
Summaries are generated and may contain mistakes; the official description above is the record.