Description
An unauthanticated remote attacker can perform a DoS of the Modbus service by sending a specific function and sub-function code without affecting the core functionality.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Phoenix Contact | QUINT4-UPS/24DC/24DC/5/EIP | VC:00 – < VC:07 | VC:07 |
| Phoenix Contact | QUINT4-UPS/24DC/24DC/10/EIP | VC:00 – < VC:07 | VC:07 |
| Phoenix Contact | QUINT4-UPS/24DC/24DC/20/EIP | VC:00 – < VC:07 | VC:07 |
| Phoenix Contact | QUINT4-UPS/24DC/24DC/40/EIP | VC:00 – < VC:07 | VC:07 |
Advisories 1
- VDE-2025-072 Phoenix Contact: Security Advisory for QUINT4-UPS EIP CERT@VDE · Oct 14, 2025