# CVE-2025-9014: Null Pointer Dereference Vulnerability on TL-WR841N

> A remote unauthenticated attacker can cause a denial of service on the web portal of TP-Link TL-WR841N routers due to a null pointer dereference.

- **Severity:** Medium 6.3 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Jan 2026
- **Updated:** 15 Jan 2026
- **Also known as:** GHSA-fg67-2rcj-c4j8

## What is CVE-2025-9014?

CVE-2025-9014 is a medium-severity vulnerability in TP-Link Systems Inc. TL-WR841N v14, published on 15 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A Null Pointer Dereference vulnerability exists in the referer header check of the web portal of TP-Link TL-WR841N v14, caused by improper input validation.  A remote, unauthenticated attacker can exploit this flaw and cause Denial of Service on the web portal service.This issue affects TL-WR841N v14: before 250908.

Weakness: CWE-476 (NULL Pointer Dereference), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2025-9014?

It affects 1 product.


Products: Tp-Link Tl-Wr841n Firmware.

## How do I fix CVE-2025-9014?

No fix has been published for CVE-2025-9014 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-9014 being exploited?

There is no known exploitation of CVE-2025-9014 in the wild and no public exploit code.

## Other vulnerabilities in TP-Link Systems Inc. TL-WR841N v14

- [CVE-2022-25073](https://insights.sbomify.com/CVE-2022-25073/): Memory corruption in n/a (critical 9.8)
- [CVE-2018-12575](https://insights.sbomify.com/CVE-2018-12575/): Auth bypass in n/a (critical 9.8)
- [CVE-2022-46912](https://insights.sbomify.com/CVE-2022-46912/): File upload in n/a (high 8.8)
- [CVE-2020-35576](https://insights.sbomify.com/CVE-2020-35576/): Command injection in n/a (high 8.8)
- [CVE-2019-17147](https://insights.sbomify.com/CVE-2019-17147/): Memory corruption in TL-WR841N (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-9014 and fix it if it is affected.

What it is: CVE-2025-9014 is a medium-severity vulnerability in TP-Link Systems Inc. TL-WR841N v14, published on 15 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-9014 in the wild and no public exploit code.

Affected product: TP-Link Systems Inc. TL-WR841N v14. 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-2025-9014/ (Markdown: https://insights.sbomify.com/CVE-2025-9014/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-9014
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-9014
- OSV: https://osv.dev/vulnerability/CVE-2025-9014

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-9014/
Summaries are generated and may contain mistakes; the official description above is the record.