# CVE-2022-4098: Wiesemann & Theis: Multiple products prone to missing authentication through spoofing

> An attacker in the same subnet can bypass authentication via IP spoofing to modify settings and take over Wiesemann & Theis Com-Server devices.

- **Severity:** High 8.0 (`CVSS:3.1/AV:A/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:** 13 Dec 2022
- **Updated:** 14 Apr 2025
- **Also known as:** GHSA-9w34-3vc7-7786

## What is CVE-2022-4098?

CVE-2022-4098 is a high-severity authentication bypass vulnerability in Wiesemann & Theis Com-Server ++, published on 13 Dec 2022. 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

Multiple Wiesemann&Theis products of the ComServer Series are prone to an authentication bypass through IP spoofing. After a user logged in to the WBM of the Com-Server an unauthenticated attacker in the same subnet can obtain the session ID and through IP spoofing change arbitrary settings by crafting modified HTTP Get requests. This may result in a complete takeover of the device.

Weakness: CWE-290 (Authentication Bypass by Spoofing)

## Which versions are affected by CVE-2022-4098?

It affects 16 products.


Products: Wut Com-Server 20ma Firmware, Wut Com-Server \+\+ Firmware, Wut Com-Server Highspeed 100basefx Firmware, Wut Com-Server Highspeed 100baselx Firmware, Wut Com-Server Highspeed 19\" 1port Firmware, Wut Com-Server Highspeed 19\" 4port Firmware, Wut Com-Server Highspeed Compact Firmware, Wut Com-Server Highspeed Industry Firmware, Wut Com-Server Highspeed Isolated Firmware, Wut Com-Server Highspeed Lc Firmware, Wut Com-Server Highspeed Oem Firmware, Wut Com-Server Highspeed Office 1port Firmware, Wut Com-Server Highspeed Office 4port Firmware, Wut Com-Server Highspeed Poe 3x Isolated Firmware, Wut Com-Server Highspeed Poe Firmware, Wut Com-Server Highspeed Ul Firmware.

## How do I fix CVE-2022-4098?

No fix has been published for CVE-2022-4098 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-4098 being exploited?

There is no known exploitation of CVE-2022-4098 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-4098 and fix it if it is affected.

What it is: CVE-2022-4098 is a high-severity authentication bypass vulnerability in Wiesemann & Theis Com-Server ++, published on 13 Dec 2022. 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-2022-4098 in the wild and no public exploit code.

Affected product: Wiesemann & Theis Com-Server ++. 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-2022-4098/ (Markdown: https://insights.sbomify.com/CVE-2022-4098/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-4098
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-4098
- OSV: https://osv.dev/vulnerability/CVE-2022-4098

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From sbomify Insights: https://insights.sbomify.com/CVE-2022-4098/
Summaries are generated and may contain mistakes; the official description above is the record.