# CVE-2025-34253: D-Link Nuclias Connect <= v1.3.1.4 Stored Cross-Site Scripting (XSS)

> An authenticated attacker can inject arbitrary JavaScript into network configuration fields, leading to script execution in other users' browsers.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 16 Oct 2025
- **Updated:** 29 Oct 2026
- **Also known as:** GHSA-c272-737g-r85g

## What is CVE-2025-34253?

CVE-2025-34253 is a medium-severity cross-site scripting vulnerability in D-Link Nuclias Connect, published on 16 Oct 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

D-Link Nuclias Connect firmware versions <= 1.3.1.4 contain a stored cross-site scripting (XSS) vulnerability due to improper sanitization of the 'Network' field when editing the configuration, creating a profile, and adding a network. An authenticated attacker can inject arbitrary JavaScript to be executed in the context of other users viewing the profile entry. NOTE: D-Link fixed this issue in version 1.3.1.5.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2025-34253?

It affects 1 product.


Products: Dlink Nuclias Connect.

## How do I fix CVE-2025-34253?

No fix has been published for CVE-2025-34253 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-34253 being exploited?

There is no known exploitation of CVE-2025-34253 in the wild and no public exploit code.

## Other vulnerabilities in D-Link Nuclias Connect

- [CVE-2025-34254](https://insights.sbomify.com/CVE-2025-34254/): D-Link Nuclias Connect <= v1.3.1.4 Login Account Enumeration (medium 6.9)
- [CVE-2025-34255](https://insights.sbomify.com/CVE-2025-34255/): D-Link Nuclias Connect <= v1.3.1.4 Forgot Password Account Enumeration (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-34253 and fix it if it is affected.

What it is: CVE-2025-34253 is a medium-severity cross-site scripting vulnerability in D-Link Nuclias Connect, published on 16 Oct 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-34253 in the wild and no public exploit code.

Affected product: D-Link Nuclias Connect. 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-2025-34253/ (Markdown: https://insights.sbomify.com/CVE-2025-34253/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-34253
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-34253
- OSV: https://osv.dev/vulnerability/CVE-2025-34253

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-34253/
Summaries are generated and may contain mistakes; the official description above is the record.