# CVE-2025-21104: Open redirect in NetWorker

> Unauthenticated attackers can redirect NetWorker Management Console users to malicious sites, facilitating phishing attacks to steal sensitive information.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 13 Mar 2025
- **Updated:** 13 Feb 2026
- **Also known as:** GHSA-5c7g-5xj5-gpx3

## What is CVE-2025-21104?

CVE-2025-21104 is a medium-severity vulnerability in Dell NetWorker, published on 13 Mar 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Dell NetWorker, versions prior to 19.11.0.4 and version 19.12, contains an URL Redirection to Untrusted Site ('Open Redirect') Vulnerability in NetWorker Management Console. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to a targeted application user being redirected to arbitrary web URLs. The vulnerability could be leveraged by attackers to conduct phishing attacks that cause users to divulge sensitive information.

Weakness: CWE-601 (URL Redirection to Untrusted Site)

## Which versions are affected by CVE-2025-21104?

It affects 1 product.


Products: Dell Networker.

## How do I fix CVE-2025-21104?

No fix has been published for CVE-2025-21104 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-21104 being exploited?

There is no known exploitation of CVE-2025-21104 in the wild and no public exploit code.

## Other vulnerabilities in Dell NetWorker

- [CVE-2023-28055](https://insights.sbomify.com/CVE-2023-28055/): Missing authorization in NetWorker (high 8.8)
- [CVE-2023-25539](https://insights.sbomify.com/CVE-2023-25539/): Command injection in NetWorker NVE (high 8.4)
- [CVE-2024-42422](https://insights.sbomify.com/CVE-2024-42422/): Auth bypass in NetWorker (high 8.3)
- [CVE-2025-21103](https://insights.sbomify.com/CVE-2025-21103/): Code injection in NetWorker Management Console (high 7.8)
- [CVE-2025-21107](https://insights.sbomify.com/CVE-2025-21107/): Privilege escalation in NetWorker (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-21104 and fix it if it is affected.

What it is: CVE-2025-21104 is a medium-severity vulnerability in Dell NetWorker, published on 13 Mar 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-21104 in the wild and no public exploit code.

Affected product: Dell NetWorker. 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-2025-21104/ (Markdown: https://insights.sbomify.com/CVE-2025-21104/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-21104
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-21104
- OSV: https://osv.dev/vulnerability/CVE-2025-21104

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-21104/
Summaries are generated and may contain mistakes; the official description above is the record.