# CVE-2024-31805: Auth bypass in n/a

> Attackers can enable Telnet service without authorization on TOTOLINK EX200 routers, potentially gaining remote shell access.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A: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:** 8 Apr 2024
- **Updated:** 15 Aug 2024
- **Also known as:** GHSA-h2xm-59gc-23mm

## What is CVE-2024-31805?

CVE-2024-31805 is a medium-severity authentication bypass vulnerability in n/a, published on 8 Apr 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

TOTOLINK EX200 V4.0.3c.7646_B20201211 allows attackers to start the Telnet service without authorization via the telnet_enabled parameter in the setTelnetCfg function.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2024-31805?

It affects 1 product.


Products: Totolink Ex200 Firmware.

## How do I fix CVE-2024-31805?

No fix has been published for CVE-2024-31805 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-31805 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-31805 exists.

## Other vulnerabilities in n/a

- [CVE-2024-31810](https://insights.sbomify.com/CVE-2024-31810/): Hardcoded credentials in n/a (critical 9.8)
- [CVE-2024-31807](https://insights.sbomify.com/CVE-2024-31807/): Code injection in n/a (critical 9.8)
- [CVE-2021-43711](https://insights.sbomify.com/CVE-2021-43711/): Command injection in n/a (critical 9.8)
- [CVE-2024-31815](https://insights.sbomify.com/CVE-2024-31815/): Missing authorization in n/a (critical 9.1)
- [CVE-2024-31808](https://insights.sbomify.com/CVE-2024-31808/): Command injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-31805 and fix it if it is affected.

What it is: CVE-2024-31805 is a medium-severity authentication bypass vulnerability in n/a, published on 8 Apr 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-31805 exists.

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-2024-31805/ (Markdown: https://insights.sbomify.com/CVE-2024-31805/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-31805
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-31805
- OSV: https://osv.dev/vulnerability/CVE-2024-31805

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-31805/
Summaries are generated and may contain mistakes; the official description above is the record.