# CVE-2016-7807: Auth bypass in WFS-SR01

> Remote attackers can bypass access restrictions to read data on storage devices connected to the I-O DATA WFS-SR01 NAS.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Jun 2017
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-46jq-fg29-4xmw

## What is CVE-2016-7807?

CVE-2016-7807 is a high-severity authentication bypass vulnerability in I-O DATA DEVICE, INC. WFS-SR01, published on 9 Jun 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

I-O DATA DEVICE WFS-SR01 firmware version 1.10 and earlier allow remote attackers to bypass access restriction to access data on storage devices inserted into the product via unspecified vectors.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2016-7807?

It affects 1 product.


Products: Iodata Wfs-Sr01 Firmware.

## How do I fix CVE-2016-7807?

No fix has been published for CVE-2016-7807 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-7807 being exploited?

There is no known exploitation of CVE-2016-7807 in the wild and no public exploit code.

## Other vulnerabilities in I-O DATA DEVICE, INC. WFS-SR01

- [CVE-2016-7806](https://insights.sbomify.com/CVE-2016-7806/): Command injection in WFS-SR01 (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-7807 and fix it if it is affected.

What it is: CVE-2016-7807 is a high-severity authentication bypass vulnerability in I-O DATA DEVICE, INC. WFS-SR01, published on 9 Jun 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-2016-7807 in the wild and no public exploit code.

Affected product: I-O DATA DEVICE, INC. WFS-SR01. 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-2016-7807/ (Markdown: https://insights.sbomify.com/CVE-2016-7807/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-7807
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-7807
- OSV: https://osv.dev/vulnerability/CVE-2016-7807

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From sbomify Insights: https://insights.sbomify.com/CVE-2016-7807/
Summaries are generated and may contain mistakes; the official description above is the record.