# CVE-2018-0554: Auth bypass in WZR-1750DHP2

> Attackers can bypass authentication and execute arbitrary commands on Buffalo WZR-1750DHP2 routers, requiring firmware updates.

- **Severity:** High 8.8 (`CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 9 Apr 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-mcpj-7fm2-56jr

## What is CVE-2018-0554?

CVE-2018-0554 is a high-severity authentication bypass vulnerability in BUFFALO INC. WZR-1750DHP2, published on 9 Apr 2018. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Buffalo WZR-1750DHP2 Ver.2.30 and earlier allows an attacker to bypass authentication and execute arbitrary commands on the device via unspecified vectors.

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

## Which versions are affected by CVE-2018-0554?

It affects 1 product.


Products: Buffalo Wzr-1750dhp2 Firmware.

## How do I fix CVE-2018-0554?

No fix has been published for CVE-2018-0554 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0554 being exploited?

There is no known exploitation of CVE-2018-0554 in the wild and no public exploit code.

## Other vulnerabilities in BUFFALO INC. WZR-1750DHP2

- [CVE-2018-0556](https://insights.sbomify.com/CVE-2018-0556/): Command injection in WZR-1750DHP2 (high 8.8)
- [CVE-2018-0555](https://insights.sbomify.com/CVE-2018-0555/): Memory corruption in WZR-1750DHP2 (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0554 and fix it if it is affected.

What it is: CVE-2018-0554 is a high-severity authentication bypass vulnerability in BUFFALO INC. WZR-1750DHP2, published on 9 Apr 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-0554 in the wild and no public exploit code.

Affected product: BUFFALO INC. WZR-1750DHP2. 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-2018-0554/ (Markdown: https://insights.sbomify.com/CVE-2018-0554/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0554
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0554
- OSV: https://osv.dev/vulnerability/CVE-2018-0554

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-0554/
Summaries are generated and may contain mistakes; the official description above is the record.