Skip to content
Fencer Vulns
medium 5.3

CVE-2025-41704 json

Phoenix Contact: Unauthenticated Modbus Service DoS via Crafted Function Code

published 2025-10-14 12 mo ago modified 2026-10-18 21 d ago also EUVD-2025-34149

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

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.

Patch / fix

  • Phoenix Contact QUINT4-UPS/24DC/24DC/5/EIP VC:07
  • Phoenix Contact QUINT4-UPS/24DC/24DC/10/EIP VC:07
  • Phoenix Contact QUINT4-UPS/24DC/24DC/20/EIP VC:07
  • Phoenix Contact QUINT4-UPS/24DC/24DC/40/EIP VC:07

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
12 mo ago

Exploit prediction

1.59% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

  • Phoenix Contact QUINT4-UPS/24DC/24DC/5/EIP
  • Phoenix Contact QUINT4-UPS/24DC/24DC/10/EIP
  • Phoenix Contact QUINT4-UPS/24DC/24DC/20/EIP
  • Phoenix Contact QUINT4-UPS/24DC/24DC/40/EIP

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.