# CVE-2026-24439: Tenda W30E V2 Lacks X-Content-Type-Options Header

> The Tenda W30E V2 router lacks the X-Content-Type-Options header, allowing browsers to MIME sniff responses and potentially execute malicious scripts.

- **Severity:** Low 2.1 (`CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA: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:** 26 Jan 2026
- **Updated:** 14 May 2026
- **Also known as:** GHSA-w69g-qrmr-3cf2

## What is CVE-2026-24439?

CVE-2026-24439 is a low-severity vulnerability in Tenda W30e Firmware, published on 26 Jan 2026. 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

Shenzhen Tenda W30E V2 firmware versions up to and including V16.01.0.19(5037) fail to include the X-Content-Type-Options: nosniff response header on web management interfaces. As a result, browsers that perform MIME sniffing may incorrectly interpret attacker-influenced responses as executable script.

Weakness: CWE-116 (Improper Encoding or Escaping of Output)

## Which versions are affected by CVE-2026-24439?

It affects 1 product.


Products: Tenda W30e Firmware.

## How do I fix CVE-2026-24439?

No fix has been published for CVE-2026-24439 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-24439 being exploited?

There is no known exploitation of CVE-2026-24439 in the wild and no public exploit code.

## Other vulnerabilities in Tenda W30e Firmware

- [CVE-2026-38835](https://insights.sbomify.com/CVE-2026-38835/): Command injection in n/a (critical 9.8)
- [CVE-2025-57085](https://insights.sbomify.com/CVE-2025-57085/): Memory corruption in n/a (critical 9.8)
- [CVE-2024-32286](https://insights.sbomify.com/CVE-2024-32286/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-49402](https://insights.sbomify.com/CVE-2023-49402/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-49403](https://insights.sbomify.com/CVE-2023-49403/): Command injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-24439 and fix it if it is affected.

What it is: CVE-2026-24439 is a low-severity vulnerability in Tenda W30e Firmware, published on 26 Jan 2026. 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-2026-24439 in the wild and no public exploit code.

Affected product: Tenda W30e Firmware. 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-2026-24439/ (Markdown: https://insights.sbomify.com/CVE-2026-24439/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-24439
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-24439
- OSV: https://osv.dev/vulnerability/CVE-2026-24439

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-24439/
Summaries are generated and may contain mistakes; the official description above is the record.