What is CVE-2025-41703?

CVE-2025-41703 is a high-severity vulnerability in Phoenix Contact Quint4-ups/24dc/24dc/10/eip, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2025-10-14.

How severe is CVE-2025-41703?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Phoenix Contact Quint4-ups/24dc/24dc/10/eip

CVE-2025-41703

An unauthenticated remote attacker can cause a Denial of Service by turning off the output of the UPS via Modbus command.

Vulnerability class: Broken Authentication

EPSS: 0.010 (58.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Phoenix Contact Quint4-ups/24dc/24dc/10/eip — versions VC:00
Phoenix Contact Quint4-ups/24dc/24dc/20/eip — versions VC:00
Phoenix Contact Quint4-ups/24dc/24dc/40/eip — versions VC:00
Phoenix Contact Quint4-ups/24dc/24dc/5/eip — versions VC:00

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

Frequently asked questions

What is CVE-2025-41703?: CVE-2025-41703 is a high-severity vulnerability in Phoenix Contact Quint4-ups/24dc/24dc/10/eip, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2025-10-14.
How severe is CVE-2025-41703?: High severity. CVSS v3 base score is 7.5 out of 10.