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Status published
High
CVE-2025-41703
Phoenix Contact: UPS Shutdown via Unauthenticated Modbus Command
Vulnerability Description
An unauthenticated remote attacker can cause a Denial of Service by turning off the output of the UPS via Modbus command.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- D. Blagojevic, S. Dietz, F. Koroknai, T. Weber from CyberDanube Security Research
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Affected Vendor
Phoenix Contact
View all reports →Affected Software
QUINT4-UPS/24DC/24DC/5/EIP, QUINT4-UPS/24DC/24DC/10/EIP, QUINT4-UPS/24DC/24DC/20/EIP, QUINT4-UPS/24DC/24DC/40/EIP
Vulnerable Versions:
VC:00
Timeline
Official Publish:
October 14th, 2025
Last Modified:
November 3rd, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H