# CVE-2021-34218: Information disclosure in n/a

> An attacker can access sensitive directories in the TOTOLINK router login portal, leading to information disclosure.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Aug 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-8wmw-62f4-gpg8

## What is CVE-2021-34218?

CVE-2021-34218 is a medium-severity vulnerability in Totolink A3002r Firmware, published on 20 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Directory Indexing in Login Portal of Login Portal of TOTOLINK-A702R-V1.0.0-B20161227.1023 allows attacker to access /add/ , /img/, /js/, and /mobile directories via GET Parameter.

## Which versions are affected by CVE-2021-34218?

It affects 1 product.


Products: Totolink A3002r Firmware.

## How do I fix CVE-2021-34218?

No fix has been published for CVE-2021-34218 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-34218 being exploited?

There is no known exploitation of CVE-2021-34218 in the wild and no public exploit code.

## Other vulnerabilities in Totolink A3002r Firmware

- [CVE-2025-55591](https://insights.sbomify.com/CVE-2025-55591/): Command injection in n/a (critical 9.8)
- [CVE-2025-45858](https://insights.sbomify.com/CVE-2025-45858/): Command injection in n/a (critical 9.8)
- [CVE-2025-45861](https://insights.sbomify.com/CVE-2025-45861/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-45863](https://insights.sbomify.com/CVE-2025-45863/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-45865](https://insights.sbomify.com/CVE-2025-45865/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-34218 and fix it if it is affected.

What it is: CVE-2021-34218 is a medium-severity vulnerability in Totolink A3002r Firmware, published on 20 Aug 2021. 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-2021-34218 in the wild and no public exploit code.

Affected product: Totolink A3002r 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-2021-34218/ (Markdown: https://insights.sbomify.com/CVE-2021-34218/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-34218
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-34218
- OSV: https://osv.dev/vulnerability/CVE-2021-34218

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-34218/
Summaries are generated and may contain mistakes; the official description above is the record.