# CVE-2021-47802: Tenda D151 & D301 - Configuration Download

> Remote attackers can download router configuration files containing admin credentials without authentication via the /goform/getimage endpoint.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/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:** Not needed
- **Fix available:** No
- **Published:** 21 Jan 2026
- **Updated:** 27 Oct 2026
- **Also known as:** GHSA-wh72-mc55-37hv

## What is CVE-2021-47802?

CVE-2021-47802 is a high-severity vulnerability in Shenzhen Tenda Technology Co.,Ltd. Tenda D151 & D301, published on 21 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Tenda D151 and D301 routers contain an unauthenticated configuration download vulnerability that allows remote attackers to retrieve router configuration files. Attackers can send a request to /goform/getimage endpoint to download configuration data including admin credentials without authentication.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2021-47802?

It affects 2 products.


Products: Tenda D151 Firmware, Tenda D301 Firmware.

## How do I fix CVE-2021-47802?

No fix has been published for CVE-2021-47802 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-47802 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47802 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-47802 and fix it if it is affected.

What it is: CVE-2021-47802 is a high-severity vulnerability in Shenzhen Tenda Technology Co.,Ltd. Tenda D151 & D301, published on 21 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47802 exists.

Affected product: Shenzhen Tenda Technology Co.,Ltd. Tenda D151 & D301. 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-2021-47802/ (Markdown: https://insights.sbomify.com/CVE-2021-47802/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-47802
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-47802
- OSV: https://osv.dev/vulnerability/CVE-2021-47802

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-47802/
Summaries are generated and may contain mistakes; the official description above is the record.