# CVE-2021-41441: Denial of service in n/a

> Remote unauthenticated attackers can cause a D-Link router to reboot by tricking an authenticated user into visiting a crafted URL.

- **Severity:** High 7.4 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H`)
- **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:** 9 Feb 2022
- **Updated:** 9 Jul 2026
- **Also known as:** GHSA-f7wq-7cmj-9wqj

## What is CVE-2021-41441?

CVE-2021-41441 is a high-severity denial of service vulnerability in n/a, published on 9 Feb 2022. 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

A DoS attack in the web application of D-Link DIR-X1860 before v1.10WWB09_Beta allows a remote unauthenticated attacker to reboot the router via sending a specially crafted URL to an authenticated victim. The authenticated victim need to visit this URL, for the router to reboot.

Weakness: CWE-404 (Improper Resource Shutdown or Release)

## Which versions are affected by CVE-2021-41441?

It affects 1 product.


Products: Dlink Dir-X1860 Firmware.

## How do I fix CVE-2021-41441?

No fix has been published for CVE-2021-41441 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-41441 being exploited?

There is no known exploitation of CVE-2021-41441 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-41442](https://insights.sbomify.com/CVE-2021-41442/): Denial of service in n/a (high 7.5)
- [CVE-2021-41445](https://insights.sbomify.com/CVE-2021-41445/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2021-46353](https://insights.sbomify.com/CVE-2021-46353/): Information disclosure in n/a (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-41441 and fix it if it is affected.

What it is: CVE-2021-41441 is a high-severity denial of service vulnerability in n/a, published on 9 Feb 2022. 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-2021-41441 in the wild and no public exploit code.

Affected product: n/a. 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-2021-41441/ (Markdown: https://insights.sbomify.com/CVE-2021-41441/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-41441
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-41441
- OSV: https://osv.dev/vulnerability/CVE-2021-41441

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-41441/
Summaries are generated and may contain mistakes; the official description above is the record.