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Fencer Vulns
medium 6.8

CVE-2025-55038 json

AutomationDirect CLICK PLUS Missing Authorization

published 2025-09-23 13 mo ago modified 2026-10-18 21 d ago also EUVD-2025-30934

cvss
6.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 17%
public exploits
0
none known

Summary

An authorization bypass vulnerability has been discovered in the Click Plus C2-03CPU2 device firmware version 3.60. Through the KOPR protocol utilized by the Remote PLC application, authenticated users with low-level access permissions can exploit this vulnerability to read and modify PLC variables beyond their intended authorization level.

Patch / fix

  • AutomationDirect CLICK PLUS C0-0x CPU firmware v3.71
  • AutomationDirect CLICK PLUS C0-1x CPU firmware v3.71
  • AutomationDirect CLICK PLUS C2-x CPU firmware v3.71

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-266-01 updated cvss 6.8

AutomationDirect CLICK PLUS

  • AutomationDirect CLICK PLUS C0-0x CPU firmware <v3.71 AutomationDirect CLICK PLUS C0-1x CPU firmware <v3.71 AutomationDirect CLICK PLUS C2-x CPU firmware <v3.71
    affected: mitigation “AutomationDirect recommends that users update CLICK PLUS and firmware to V3.80.” automationdirect.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
13 mo ago

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 7.6 CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CNA 3.1 6.8 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CNA 4.0 7.6 CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • AutomationDirect CLICK PLUS C0-0x CPU firmware
  • AutomationDirect CLICK PLUS C0-1x CPU firmware
  • AutomationDirect CLICK PLUS C2-x CPU firmware

Classification

Weakness

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.