# CVE-2024-1661: Totolink X6000R shadow hard-coded credentials

> Hard-coded credentials in the shadow file allow local attackers to gain elevated privileges and access sensitive data on Totolink X6000R routers.

- **Severity:** Low 2.5 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Feb 2024
- **Updated:** 28 Aug 2024
- **Also known as:** GHSA-v3xc-v2g4-h75g

## What is CVE-2024-1661?

CVE-2024-1661 is a low-severity vulnerability in Totolink X6000r Firmware, published on 20 Feb 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability classified as problematic was found in Totolink X6000R 9.4.0cu.852_B20230719. Affected by this vulnerability is an unknown functionality of the file /etc/shadow. The manipulation leads to hard-coded credentials. It is possible to launch the attack on the local host. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-254179. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-798 (Use of Hard-coded Credentials)

## Which versions are affected by CVE-2024-1661?

It affects 1 product.


Products: Totolink X6000r Firmware.

## How do I fix CVE-2024-1661?

No fix has been published for CVE-2024-1661 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-1661 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-1661 exists.

## Other vulnerabilities in Totolink X6000r Firmware

- [CVE-2025-52053](https://insights.sbomify.com/CVE-2025-52053/): Command injection in n/a (critical 9.8)
- [CVE-2024-52723](https://insights.sbomify.com/CVE-2024-52723/): Command injection in n/a (critical 9.8)
- [CVE-2023-52038](https://insights.sbomify.com/CVE-2023-52038/): Command injection in n/a (critical 9.8)
- [CVE-2023-52039](https://insights.sbomify.com/CVE-2023-52039/): Command injection in n/a (critical 9.8)
- [CVE-2023-52041](https://insights.sbomify.com/CVE-2023-52041/): Command injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-1661 and fix it if it is affected.

What it is: CVE-2024-1661 is a low-severity vulnerability in Totolink X6000r Firmware, published on 20 Feb 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-2024-1661 exists.

Affected product: Totolink X6000r 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-2024-1661/ (Markdown: https://insights.sbomify.com/CVE-2024-1661/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-1661
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-1661
- OSV: https://osv.dev/vulnerability/CVE-2024-1661

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-1661/
Summaries are generated and may contain mistakes; the official description above is the record.