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ICS Advisories

Advisories specifically aimed at industrial control systems — from CISA ICS-CERT and directly from vendors (including Siemens, ABB, Schneider Electric, WAGO and Phoenix Contact) — including revision history (initial publication, Update A, Update B) and linked CVEs.

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Advisory data: live connection— last retrieved: 7 November 2026 at 01:34.

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VDE-2025-072

Phoenix Contact: Security Advisory for QUINT4-UPS EIP

Phoenix Contact — QUINT4

Phoenix Contact PSIRThigh

Published

14 October 2025

Last update

14 October 2025

Affected sectors

Risk evaluation

Multiple vulnerabilities were discovered in the firmware of QUINT4-UPS EIP devices that can be used by an unauthenticated remote attacker to perform Denial of Service attacks and to gather login credentials for the Webfrontend.

Mitigation summary

This product was designed for use in closed industrial networks. Phoenix Contact strongly recommends operating network-capable devices in closed networks or protected with a suitable firewall. For detailed information on our recommendations for measures to protect network-capable devices, please refer to our [application note](https://dam-mdc.phoenixcontact.com/asset/156443151564/0a870ae433c19148b80bd760f3a1c1f2/107913_en_03.pdf). In the industrial sector it is common practice to use Modbus/TCP without authentication.

Revision history (1)
  1. Initial publication — 14 October 2025

    Initial revision.

Official source: Phoenix Contact PSIRT