# CVE-2017-8055: Information disclosure in n/a

> An attacker can enumerate valid usernames on WatchGuard Firebox devices by analyzing responses to blank password login requests via XML-RPC.

- **Severity:** Medium 5.3 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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:** 22 Apr 2017
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-v893-q2rg-wwfx

## What is CVE-2017-8055?

CVE-2017-8055 is a medium-severity vulnerability in Watchguard Fireware, published on 22 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

WatchGuard Fireware allows user enumeration, e.g., in the Firebox XML-RPC login handler. A login request that contains a blank password sent to the XML-RPC agent in Fireware v11.12.1 and earlier returns different responses for valid and invalid usernames. An attacker could exploit this vulnerability to enumerate valid usernames on an affected Firebox.

Weakness: CWE-203 (Observable Discrepancy)

## Which versions are affected by CVE-2017-8055?

It affects 1 product.


Products: Watchguard Fireware.

## How do I fix CVE-2017-8055?

No fix has been published for CVE-2017-8055 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-8055 being exploited?

There is no known exploitation of CVE-2017-8055 in the wild and no public exploit code.

## Other vulnerabilities in Watchguard Fireware

- [CVE-2022-26318](https://insights.sbomify.com/CVE-2022-26318/): WatchGuard Firebox and XTM Appliances Arbitrary Code Execution (critical 9.8, exploited in the wild)
- [CVE-2025-14733](https://insights.sbomify.com/CVE-2025-14733/): WatchGuard Firebox Out of Bounds Write (critical 9.3, exploited in the wild)
- [CVE-2025-9242](https://insights.sbomify.com/CVE-2025-9242/): WatchGuard Firebox Out-of-Bounds Write (critical 9.3, exploited in the wild)
- [CVE-2022-23176](https://insights.sbomify.com/CVE-2022-23176/): WatchGuard Firebox and XTM Privilege Escalation (high 8.8, exploited in the wild)
- [CVE-2022-31789](https://insights.sbomify.com/CVE-2022-31789/): Integer overflow in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-8055 and fix it if it is affected.

What it is: CVE-2017-8055 is a medium-severity vulnerability in Watchguard Fireware, published on 22 Apr 2017. 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-2017-8055 in the wild and no public exploit code.

Affected product: Watchguard Fireware. 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-2017-8055/ (Markdown: https://insights.sbomify.com/CVE-2017-8055/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-8055
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-8055
- OSV: https://osv.dev/vulnerability/CVE-2017-8055

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-8055/
Summaries are generated and may contain mistakes; the official description above is the record.