Vulnerability · CVE-2025-55038
An authorization bypass vulnerability has been discovered in the Click Plus C2-03CPU2 device firmware version 3.60.
Published Sep 23, 2025 · catalog updated Sep 24, 2025 · AutomationDirect CLICK PLUS C0-0x CPU firmware
Last checked Oct 29, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-55038. EPSS is 0.26%. Act only if a listed version of AutomationDirect CLICK PLUS C0-0x CPU firmware is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2025-55069 · High
- CVE-2025-59484 · High
- CVE-2025-54855 · Medium
- Severity
- High7.6
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.26%
- Remediation
- Version ranges on file
- Affected products
- vendor AutomationDirect CLICK PLUS C0-0x CPU firmware 0 <v3.71
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.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor AutomationDirect CLICK PLUS C0-0x CPU firmware 0 <v3.710 <v3.71
How to fix CVE-2025-55038
Upgrade
CVE-2025-55038 lists a fix boundary at v3.71. Compare the installed build with that boundary before you change production.
Version check
Seen in 0 <v3.71
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-55038. EPSS is 0.26%. Act only if a listed version of AutomationDirect CLICK PLUS C0-0x CPU firmware is installed.
Which versions are affected?
Compare what you have installed with AutomationDirect CLICK PLUS C0-0x CPU firmware 0 <v3.71 0 <v3.71. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.26%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Sep 23, 2025 · EUVD
Detected
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.
Sep 24, 2025 · EUVD
Updated
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.
Sources
- CVE.orgVulnerability recordCVE-2025-55038
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-55038
30-day exploitation probability 0.26%
first.org - EUVDVulnerability recordEUVD-2025-30934
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 m
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Oct 29, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSOct 29, 2026
- CVE.orgOct 23, 2026
- EUVDOct 23, 2026