# CVE-2025-15606: Denial of Service (DoS) in HTTPD Input Handling on TP-Link TD-W8961N

> Attackers can crash the httpd service on TP-Link TD-W8961N routers via crafted requests, causing denial of service.

- **Severity:** High 7.1 (`CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Mar 2026
- **Updated:** 24 Mar 2026
- **Also known as:** GHSA-7gjx-r4jj-vjx7

## What is CVE-2025-15606?

CVE-2025-15606 is a high-severity denial of service vulnerability in TP-Link Systems Inc. TD-W8961N v4.0, published on 23 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A Denial-of-Service (DoS) vulnerability in the httpd component of TP-Link's TD-W8961N v4.0 due to improper input sanitization, allows crafted requests to trigger a processing error that causes the httpd service to crash.  Successful exploitation may allow the attacker to cause service interruption, resulting in a DoS condition.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2025-15606?

It affects 1 product.


Products: Tp-Link Td-W8961nd Firmware.

## How do I fix CVE-2025-15606?

No fix has been published for CVE-2025-15606 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-15606 being exploited?

There is no known exploitation of CVE-2025-15606 in the wild and no public exploit code.

## Other vulnerabilities in TP-Link Systems Inc. TD-W8961N v4.0

- [CVE-2018-20372](https://insights.sbomify.com/CVE-2018-20372/): Cross-site scripting in n/a (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-15606 and fix it if it is affected.

What it is: CVE-2025-15606 is a high-severity denial of service vulnerability in TP-Link Systems Inc. TD-W8961N v4.0, published on 23 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-15606 in the wild and no public exploit code.

Affected product: TP-Link Systems Inc. TD-W8961N v4.0. 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-2025-15606/ (Markdown: https://insights.sbomify.com/CVE-2025-15606/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-15606
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-15606
- OSV: https://osv.dev/vulnerability/CVE-2025-15606

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-15606/
Summaries are generated and may contain mistakes; the official description above is the record.