# CVE-2018-0522: Memory corruption in WXR-1900DHP2

> A buffer overflow in Buffalo WXR-1900DHP2 firmware allows attackers to execute arbitrary code via a specially crafted file.

- **Severity:** High 7.8 (`CVSS:3.0/AV:L/AC:L/PR:N/UI:R/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 9 Mar 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-jq2q-7qx5-g3wj

## What is CVE-2018-0522?

CVE-2018-0522 is a high-severity memory corruption vulnerability in BUFFALO INC. WXR-1900DHP2, published on 9 Mar 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Buffer overflow in Buffalo WXR-1900DHP2 firmware Ver.2.48 and earlier allows an attacker to execute arbitrary code via a specially crafted file.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2018-0522?

It affects 1 product.


Products: Buffalo Wxr-1900dhp2 Firmware.

## How do I fix CVE-2018-0522?

No fix has been published for CVE-2018-0522 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0522 being exploited?

There is no known exploitation of CVE-2018-0522 in the wild and no public exploit code.

## Other vulnerabilities in BUFFALO INC. WXR-1900DHP2

- [CVE-2018-0521](https://insights.sbomify.com/CVE-2018-0521/): Auth bypass in WXR-1900DHP2 (high 8.8)
- [CVE-2018-0523](https://insights.sbomify.com/CVE-2018-0523/): Command injection in WXR-1900DHP2 (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0522 and fix it if it is affected.

What it is: CVE-2018-0522 is a high-severity memory corruption vulnerability in BUFFALO INC. WXR-1900DHP2, published on 9 Mar 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-0522 in the wild and no public exploit code.

Affected product: BUFFALO INC. WXR-1900DHP2. 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-2018-0522/ (Markdown: https://insights.sbomify.com/CVE-2018-0522/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0522
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0522
- OSV: https://osv.dev/vulnerability/CVE-2018-0522

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-0522/
Summaries are generated and may contain mistakes; the official description above is the record.